Home / 520,243,015,658.15-717,877,134,786.39-288,766,291,226.70

Finding the Fourth Proportional to 520,243,015,658.15, 717,877,134,786.39 and 288,766,291,226.70

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Solution

The fourth proportional to 520,243,015,658.15, 717,877,134,786.39 and 288,766,291,226.70 is: 398,465,162,490.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,243,015,658.15 : 717,877,134,786.39 = 288,766,291,226.70 : x
  2. Step 2: Convert to fraction form
    520,243,015,658.15/717,877,134,786.39 = 288,766,291,226.70/x
  3. Step 3: Cross multiply
    520,243,015,658.15x = 717,877,134,786.39 × 288,766,291,226.70
  4. Step 4: Simplify right side
    520,243,015,658.15x = 207,298,717,768,715,666,980,864
  5. Step 5: Solve for x
    x = 207,298,717,768,715,666,980,864/520,243,015,658.15
  6. Step 6: Final answer
    x = 398,465,162,490.39

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Double scale
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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.