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Finding the Fourth Proportional to 680,091.66, 938,526.57 and 374,161.50

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Solution

The fourth proportional to 680,091.66, 938,526.57 and 374,161.50 is: 516,342.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,091.66 : 938,526.57 = 374,161.50 : x
  2. Step 2: Convert to fraction form
    680,091.66/938,526.57 = 374,161.50/x
  3. Step 3: Cross multiply
    680,091.66x = 938,526.57 × 374,161.50
  4. Step 4: Simplify right side
    680,091.66x = 351,160,509,221.06
  5. Step 5: Solve for x
    x = 351,160,509,221.06/680,091.66
  6. Step 6: Final answer
    x = 516,342.91

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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.