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Finding the Fourth Proportional to 678,689.27, 936,602.48 and 372,793.96

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Solution

The fourth proportional to 678,689.27, 936,602.48 and 372,793.96 is: 514,461.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,689.27 : 936,602.48 = 372,793.96 : x
  2. Step 2: Convert to fraction form
    678,689.27/936,602.48 = 372,793.96/x
  3. Step 3: Cross multiply
    678,689.27x = 936,602.48 × 372,793.96
  4. Step 4: Simplify right side
    678,689.27x = 349,159,740,918.04
  5. Step 5: Solve for x
    x = 349,159,740,918.04/678,689.27
  6. Step 6: Final answer
    x = 514,461.86

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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.