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Finding the Fourth Proportional to 881,001, 1,215,781.38 and 478,593

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Solution

The fourth proportional to 881,001, 1,215,781.38 and 478,593 is: 660,458.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    881,001 : 1,215,781.38 = 478,593 : x
  2. Step 2: Convert to fraction form
    881,001/1,215,781.38 = 478,593/x
  3. Step 3: Cross multiply
    881,001x = 1,215,781.38 × 478,593
  4. Step 4: Simplify right side
    881,001x = 581,864,457,998.34
  5. Step 5: Solve for x
    x = 581,864,457,998.34/881,001
  6. Step 6: Final answer
    x = 660,458.34

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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.