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Finding the Fourth Proportional to 680,063.70, 938,487.88 and 374,133.50

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Solution

The fourth proportional to 680,063.70, 938,487.88 and 374,133.50 is: 516,304.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,063.70 : 938,487.88 = 374,133.50 : x
  2. Step 2: Convert to fraction form
    680,063.70/938,487.88 = 374,133.50/x
  3. Step 3: Cross multiply
    680,063.70x = 938,487.88 × 374,133.50
  4. Step 4: Simplify right side
    680,063.70x = 351,119,754,546.54
  5. Step 5: Solve for x
    x = 351,119,754,546.54/680,063.70
  6. Step 6: Final answer
    x = 516,304.22

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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.