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Finding the Fourth Proportional to 587,781.40, 881,672.10 and 307,384.60

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Solution

The fourth proportional to 587,781.40, 881,672.10 and 307,384.60 is: 461,076.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,781.40 : 881,672.10 = 307,384.60 : x
  2. Step 2: Convert to fraction form
    587,781.40/881,672.10 = 307,384.60/x
  3. Step 3: Cross multiply
    587,781.40x = 881,672.10 × 307,384.60
  4. Step 4: Simplify right side
    587,781.40x = 271,012,425,789.66
  5. Step 5: Solve for x
    x = 271,012,425,789.66/587,781.40
  6. Step 6: Final answer
    x = 461,076.90

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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.