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Finding the Fourth Proportional to 710,002,938, 979,799,275.92 and 396,737,880.96

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Solution

The fourth proportional to 710,002,938, 979,799,275.92 and 396,737,880.96 is: 547,495,605.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,002,938 : 979,799,275.92 = 396,737,880.96 : x
  2. Step 2: Convert to fraction form
    710,002,938/979,799,275.92 = 396,737,880.96/x
  3. Step 3: Cross multiply
    710,002,938x = 979,799,275.92 × 396,737,880.96
  4. Step 4: Simplify right side
    710,002,938x = 388,723,488,494,643,136
  5. Step 5: Solve for x
    x = 388,723,488,494,643,136/710,002,938
  6. Step 6: Final answer
    x = 547,495,605.57

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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.