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Finding the Fourth Proportional to 587,279.05, 810,431.50 and 342,248.20

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Solution

The fourth proportional to 587,279.05, 810,431.50 and 342,248.20 is: 472,294.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,279.05 : 810,431.50 = 342,248.20 : x
  2. Step 2: Convert to fraction form
    587,279.05/810,431.50 = 342,248.20/x
  3. Step 3: Cross multiply
    587,279.05x = 810,431.50 × 342,248.20
  4. Step 4: Simplify right side
    587,279.05x = 277,368,722,098.30
  5. Step 5: Solve for x
    x = 277,368,722,098.30/587,279.05
  6. Step 6: Final answer
    x = 472,294.60

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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.