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Finding the Fourth Proportional to 707,400.18, 1,060,574.85 and 636,114.78

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Solution

The fourth proportional to 707,400.18, 1,060,574.85 and 636,114.78 is: 953,699.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,400.18 : 1,060,574.85 = 636,114.78 : x
  2. Step 2: Convert to fraction form
    707,400.18/1,060,574.85 = 636,114.78/x
  3. Step 3: Cross multiply
    707,400.18x = 1,060,574.85 × 636,114.78
  4. Step 4: Simplify right side
    707,400.18x = 674,647,337,381.28
  5. Step 5: Solve for x
    x = 674,647,337,381.28/707,400.18
  6. Step 6: Final answer
    x = 953,699.70

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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.