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Finding the Fourth Proportional to 440,187.60, 658,531.80 and 381,673.20

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Solution

The fourth proportional to 440,187.60, 658,531.80 and 381,673.20 is: 570,992.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,187.60 : 658,531.80 = 381,673.20 : x
  2. Step 2: Convert to fraction form
    440,187.60/658,531.80 = 381,673.20/x
  3. Step 3: Cross multiply
    440,187.60x = 658,531.80 × 381,673.20
  4. Step 4: Simplify right side
    440,187.60x = 251,343,939,407.76
  5. Step 5: Solve for x
    x = 251,343,939,407.76/440,187.60
  6. Step 6: Final answer
    x = 570,992.78

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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.