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Finding the Fourth Proportional to 731,375.40, 1,008,891.86 and 425,417.34

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Solution

The fourth proportional to 731,375.40, 1,008,891.86 and 425,417.34 is: 586,839.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    731,375.40 : 1,008,891.86 = 425,417.34 : x
  2. Step 2: Convert to fraction form
    731,375.40/1,008,891.86 = 425,417.34/x
  3. Step 3: Cross multiply
    731,375.40x = 1,008,891.86 × 425,417.34
  4. Step 4: Simplify right side
    731,375.40x = 429,200,091,428.85
  5. Step 5: Solve for x
    x = 429,200,091,428.85/731,375.40
  6. Step 6: Final answer
    x = 586,839.66

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1.5x scale

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.