Home / 520,243,015,655.40-717,877,134,782.58-288,766,291,223.95

Finding the Fourth Proportional to 520,243,015,655.40, 717,877,134,782.58 and 288,766,291,223.95

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Solution

The fourth proportional to 520,243,015,655.40, 717,877,134,782.58 and 288,766,291,223.95 is: 398,465,162,486.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,243,015,655.40 : 717,877,134,782.58 = 288,766,291,223.95 : x
  2. Step 2: Convert to fraction form
    520,243,015,655.40/717,877,134,782.58 = 288,766,291,223.95/x
  3. Step 3: Cross multiply
    520,243,015,655.40x = 717,877,134,782.58 × 288,766,291,223.95
  4. Step 4: Simplify right side
    520,243,015,655.40x = 207,298,717,765,641,309,257,728
  5. Step 5: Solve for x
    x = 207,298,717,765,641,309,257,728/520,243,015,655.40
  6. Step 6: Final answer
    x = 398,465,162,486.59

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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.