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Finding the Fourth Proportional to 667,327.08, 921,000.06 and 380,781.48

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Solution

The fourth proportional to 667,327.08, 921,000.06 and 380,781.48 is: 525,529.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,327.08 : 921,000.06 = 380,781.48 : x
  2. Step 2: Convert to fraction form
    667,327.08/921,000.06 = 380,781.48/x
  3. Step 3: Cross multiply
    667,327.08x = 921,000.06 × 380,781.48
  4. Step 4: Simplify right side
    667,327.08x = 350,699,765,926.89
  5. Step 5: Solve for x
    x = 350,699,765,926.89/667,327.08
  6. Step 6: Final answer
    x = 525,529.05

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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.