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Finding the Fourth Proportional to 861,666.67, 1,292,507.03 and 293,176.96

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Solution

The fourth proportional to 861,666.67, 1,292,507.03 and 293,176.96 is: 439,767.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,666.67 : 1,292,507.03 = 293,176.96 : x
  2. Step 2: Convert to fraction form
    861,666.67/1,292,507.03 = 293,176.96/x
  3. Step 3: Cross multiply
    861,666.67x = 1,292,507.03 × 293,176.96
  4. Step 4: Simplify right side
    861,666.67x = 378,933,281,834.03
  5. Step 5: Solve for x
    x = 378,933,281,834.03/861,666.67
  6. Step 6: Final answer
    x = 439,767.83

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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.