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Finding the Fourth Proportional to 716,506.27, 988,793.97 and 394,217.30

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Solution

The fourth proportional to 716,506.27, 988,793.97 and 394,217.30 is: 544,028.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,506.27 : 988,793.97 = 394,217.30 : x
  2. Step 2: Convert to fraction form
    716,506.27/988,793.97 = 394,217.30/x
  3. Step 3: Cross multiply
    716,506.27x = 988,793.97 × 394,217.30
  4. Step 4: Simplify right side
    716,506.27x = 389,799,684,165.71
  5. Step 5: Solve for x
    x = 389,799,684,165.71/716,506.27
  6. Step 6: Final answer
    x = 544,028.30

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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.