Home / 742,456.20-1,024,588.92-420,160.44

Finding the Fourth Proportional to 742,456.20, 1,024,588.92 and 420,160.44

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Solution

The fourth proportional to 742,456.20, 1,024,588.92 and 420,160.44 is: 579,821.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,456.20 : 1,024,588.92 = 420,160.44 : x
  2. Step 2: Convert to fraction form
    742,456.20/1,024,588.92 = 420,160.44/x
  3. Step 3: Cross multiply
    742,456.20x = 1,024,588.92 × 420,160.44
  4. Step 4: Simplify right side
    742,456.20x = 430,491,731,446.33
  5. Step 5: Solve for x
    x = 430,491,731,446.33/742,456.20
  6. Step 6: Final answer
    x = 579,821.05

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Double scale
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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.