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Finding the Fourth Proportional to 579,748.41, 868,820.72 and 418,538.97

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Solution

The fourth proportional to 579,748.41, 868,820.72 and 418,538.97 is: 627,229.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,748.41 : 868,820.72 = 418,538.97 : x
  2. Step 2: Convert to fraction form
    579,748.41/868,820.72 = 418,538.97/x
  3. Step 3: Cross multiply
    579,748.41x = 868,820.72 × 418,538.97
  4. Step 4: Simplify right side
    579,748.41x = 363,635,327,170.76
  5. Step 5: Solve for x
    x = 363,635,327,170.76/579,748.41
  6. Step 6: Final answer
    x = 627,229.54

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1.5x scale

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.