Home / 674,648.20-1,010,805.90-318,896.20

Finding the Fourth Proportional to 674,648.20, 1,010,805.90 and 318,896.20

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Solution

The fourth proportional to 674,648.20, 1,010,805.90 and 318,896.20 is: 477,792.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,648.20 : 1,010,805.90 = 318,896.20 : x
  2. Step 2: Convert to fraction form
    674,648.20/1,010,805.90 = 318,896.20/x
  3. Step 3: Cross multiply
    674,648.20x = 1,010,805.90 × 318,896.20
  4. Step 4: Simplify right side
    674,648.20x = 322,342,160,447.58
  5. Step 5: Solve for x
    x = 322,342,160,447.58/674,648.20
  6. Step 6: Final answer
    x = 477,792.96

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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.