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Finding the Fourth Proportional to 672,877.72, 928,540.02 and 386,196.04

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Solution

The fourth proportional to 672,877.72, 928,540.02 and 386,196.04 is: 532,932.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,877.72 : 928,540.02 = 386,196.04 : x
  2. Step 2: Convert to fraction form
    672,877.72/928,540.02 = 386,196.04/x
  3. Step 3: Cross multiply
    672,877.72x = 928,540.02 × 386,196.04
  4. Step 4: Simplify right side
    672,877.72x = 358,598,478,705.52
  5. Step 5: Solve for x
    x = 358,598,478,705.52/672,877.72
  6. Step 6: Final answer
    x = 532,932.61

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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.