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Finding the Fourth Proportional to 680,064.23, 938,488.63 and 374,134.04

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Solution

The fourth proportional to 680,064.23, 938,488.63 and 374,134.04 is: 516,304.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,064.23 : 938,488.63 = 374,134.04 : x
  2. Step 2: Convert to fraction form
    680,064.23/938,488.63 = 374,134.04/x
  3. Step 3: Cross multiply
    680,064.23x = 938,488.63 × 374,134.04
  4. Step 4: Simplify right side
    680,064.23x = 351,120,542,635.97
  5. Step 5: Solve for x
    x = 351,120,542,635.97/680,064.23
  6. Step 6: Final answer
    x = 516,304.97

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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.