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Finding the Fourth Proportional to 655,343.60, 982,686.65 and 381,878.39

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Solution

The fourth proportional to 655,343.60, 982,686.65 and 381,878.39 is: 572,626.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,343.60 : 982,686.65 = 381,878.39 : x
  2. Step 2: Convert to fraction form
    655,343.60/982,686.65 = 381,878.39/x
  3. Step 3: Cross multiply
    655,343.60x = 982,686.65 × 381,878.39
  4. Step 4: Simplify right side
    655,343.60x = 375,266,798,061.39
  5. Step 5: Solve for x
    x = 375,266,798,061.39/655,343.60
  6. Step 6: Final answer
    x = 572,626.02

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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.