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Finding the Fourth Proportional to 680,030.91, 938,405.57 and 374,057.91

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Solution

The fourth proportional to 680,030.91, 938,405.57 and 374,057.91 is: 516,179.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,030.91 : 938,405.57 = 374,057.91 : x
  2. Step 2: Convert to fraction form
    680,030.91/938,405.57 = 374,057.91/x
  3. Step 3: Cross multiply
    680,030.91x = 938,405.57 × 374,057.91
  4. Step 4: Simplify right side
    680,030.91x = 351,018,024,376.27
  5. Step 5: Solve for x
    x = 351,018,024,376.27/680,030.91
  6. Step 6: Final answer
    x = 516,179.51

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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.