Home / 820,688,349.28-1,132,515,908.88-449,403,983.20

Finding the Fourth Proportional to 820,688,349.28, 1,132,515,908.88 and 449,403,983.20

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Solution

The fourth proportional to 820,688,349.28, 1,132,515,908.88 and 449,403,983.20 is: 620,158,871.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,688,349.28 : 1,132,515,908.88 = 449,403,983.20 : x
  2. Step 2: Convert to fraction form
    820,688,349.28/1,132,515,908.88 = 449,403,983.20/x
  3. Step 3: Cross multiply
    820,688,349.28x = 1,132,515,908.88 × 449,403,983.20
  4. Step 4: Simplify right side
    820,688,349.28x = 508,957,160,488,040,320
  5. Step 5: Solve for x
    x = 508,957,160,488,040,320/820,688,349.28
  6. Step 6: Final answer
    x = 620,158,871.43

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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.