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Finding the Fourth Proportional to 675,863.20, 932,586.96 and 389,327.20

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Solution

The fourth proportional to 675,863.20, 932,586.96 and 389,327.20 is: 537,211.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,863.20 : 932,586.96 = 389,327.20 : x
  2. Step 2: Convert to fraction form
    675,863.20/932,586.96 = 389,327.20/x
  3. Step 3: Cross multiply
    675,863.20x = 932,586.96 × 389,327.20
  4. Step 4: Simplify right side
    675,863.20x = 363,081,469,893.31
  5. Step 5: Solve for x
    x = 363,081,469,893.31/675,863.20
  6. Step 6: Final answer
    x = 537,211.48

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1.5x scale

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.