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Finding the Fourth Proportional to 979,752.40, 1,351,965 and 549,934

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Solution

The fourth proportional to 979,752.40, 1,351,965 and 549,934 is: 758,856.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    979,752.40 : 1,351,965 = 549,934 : x
  2. Step 2: Convert to fraction form
    979,752.40/1,351,965 = 549,934/x
  3. Step 3: Cross multiply
    979,752.40x = 1,351,965 × 549,934
  4. Step 4: Simplify right side
    979,752.40x = 743,491,520,310
  5. Step 5: Solve for x
    x = 743,491,520,310/979,752.40
  6. Step 6: Final answer
    x = 758,856.54

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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.