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Finding the Fourth Proportional to 655,263.48, 982,542.87 and 385,484.88

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Solution

The fourth proportional to 655,263.48, 982,542.87 and 385,484.88 is: 578,020.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,263.48 : 982,542.87 = 385,484.88 : x
  2. Step 2: Convert to fraction form
    655,263.48/982,542.87 = 385,484.88/x
  3. Step 3: Cross multiply
    655,263.48x = 982,542.87 × 385,484.88
  4. Step 4: Simplify right side
    655,263.48x = 378,755,420,336.81
  5. Step 5: Solve for x
    x = 378,755,420,336.81/655,263.48
  6. Step 6: Final answer
    x = 578,020.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.