Home / 439,916.20-659,874.30-329,324.20

Finding the Fourth Proportional to 439,916.20, 659,874.30 and 329,324.20

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Solution

The fourth proportional to 439,916.20, 659,874.30 and 329,324.20 is: 493,986.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,916.20 : 659,874.30 = 329,324.20 : x
  2. Step 2: Convert to fraction form
    439,916.20/659,874.30 = 329,324.20/x
  3. Step 3: Cross multiply
    439,916.20x = 659,874.30 × 329,324.20
  4. Step 4: Simplify right side
    439,916.20x = 217,312,575,948.06
  5. Step 5: Solve for x
    x = 217,312,575,948.06/439,916.20
  6. Step 6: Final answer
    x = 493,986.30

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Double scale
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Similar ratio
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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.