Home / 520,243,015,665.65-717,877,134,796.75-288,766,291,234.20

Finding the Fourth Proportional to 520,243,015,665.65, 717,877,134,796.75 and 288,766,291,234.20

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Solution

The fourth proportional to 520,243,015,665.65, 717,877,134,796.75 and 288,766,291,234.20 is: 398,465,162,500.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,243,015,665.65 : 717,877,134,796.75 = 288,766,291,234.20 : x
  2. Step 2: Convert to fraction form
    520,243,015,665.65/717,877,134,796.75 = 288,766,291,234.20/x
  3. Step 3: Cross multiply
    520,243,015,665.65x = 717,877,134,796.75 × 288,766,291,234.20
  4. Step 4: Simplify right side
    520,243,015,665.65x = 207,298,717,777,091,356,524,544
  5. Step 5: Solve for x
    x = 207,298,717,777,091,356,524,544/520,243,015,665.65
  6. Step 6: Final answer
    x = 398,465,162,500.75

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Find fourth proportional to 1,040,486,031,331.30, 1,435,754,269,593.50 and 577,532,582,468.40
Double scale
Find fourth proportional to 520,243,015,666.65, 717,877,134,798.13 and 288,766,291,235.20
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.