Home / 512,489,397.78-769,960,475.14-328,617,121.28

Finding the Fourth Proportional to 512,489,397.78, 769,960,475.14 and 328,617,121.28

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Solution

The fourth proportional to 512,489,397.78, 769,960,475.14 and 328,617,121.28 is: 493,712,057.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,489,397.78 : 769,960,475.14 = 328,617,121.28 : x
  2. Step 2: Convert to fraction form
    512,489,397.78/769,960,475.14 = 328,617,121.28/x
  3. Step 3: Cross multiply
    512,489,397.78x = 769,960,475.14 × 328,617,121.28
  4. Step 4: Simplify right side
    512,489,397.78x = 253,022,194,839,887,776
  5. Step 5: Solve for x
    x = 253,022,194,839,887,776/512,489,397.78
  6. Step 6: Final answer
    x = 493,712,057.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.