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Finding the Fourth Proportional to 684,753,907, 944,962,223.28 and 371,488,120.96

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Solution

The fourth proportional to 684,753,907, 944,962,223.28 and 371,488,120.96 is: 512,654,600.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,753,907 : 944,962,223.28 = 371,488,120.96 : x
  2. Step 2: Convert to fraction form
    684,753,907/944,962,223.28 = 371,488,120.96/x
  3. Step 3: Cross multiply
    684,753,907x = 944,962,223.28 × 371,488,120.96
  4. Step 4: Simplify right side
    684,753,907x = 351,042,240,704,471,168
  5. Step 5: Solve for x
    x = 351,042,240,704,471,168/684,753,907
  6. Step 6: Final answer
    x = 512,654,600.60

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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.