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Finding the Fourth Proportional to 662,910.20, 914,760.30 and 372,499.64

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Solution

The fourth proportional to 662,910.20, 914,760.30 and 372,499.64 is: 514,018.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,910.20 : 914,760.30 = 372,499.64 : x
  2. Step 2: Convert to fraction form
    662,910.20/914,760.30 = 372,499.64/x
  3. Step 3: Cross multiply
    662,910.20x = 914,760.30 × 372,499.64
  4. Step 4: Simplify right side
    662,910.20x = 340,747,882,436.29
  5. Step 5: Solve for x
    x = 340,747,882,436.29/662,910.20
  6. Step 6: Final answer
    x = 514,018.16

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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.