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Finding the Fourth Proportional to 680,470.87, 939,042.39 and 374,540.71

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Solution

The fourth proportional to 680,470.87, 939,042.39 and 374,540.71 is: 516,862.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,470.87 : 939,042.39 = 374,540.71 : x
  2. Step 2: Convert to fraction form
    680,470.87/939,042.39 = 374,540.71/x
  3. Step 3: Cross multiply
    680,470.87x = 939,042.39 × 374,540.71
  4. Step 4: Simplify right side
    680,470.87x = 351,709,603,470.70
  5. Step 5: Solve for x
    x = 351,709,603,470.70/680,470.87
  6. Step 6: Final answer
    x = 516,862.10

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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.