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Finding the Fourth Proportional to 545,649, 752,996.42 and 316,250.92

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Solution

The fourth proportional to 545,649, 752,996.42 and 316,250.92 is: 436,426.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,649 : 752,996.42 = 316,250.92 : x
  2. Step 2: Convert to fraction form
    545,649/752,996.42 = 316,250.92/x
  3. Step 3: Cross multiply
    545,649x = 752,996.42 × 316,250.92
  4. Step 4: Simplify right side
    545,649x = 238,135,810,581.71
  5. Step 5: Solve for x
    x = 238,135,810,581.71/545,649
  6. Step 6: Final answer
    x = 436,426.73

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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.