Home / 747,916.60-1,121,874.90-449,318.20

Finding the Fourth Proportional to 747,916.60, 1,121,874.90 and 449,318.20

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Solution

The fourth proportional to 747,916.60, 1,121,874.90 and 449,318.20 is: 673,977.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,916.60 : 1,121,874.90 = 449,318.20 : x
  2. Step 2: Convert to fraction form
    747,916.60/1,121,874.90 = 449,318.20/x
  3. Step 3: Cross multiply
    747,916.60x = 1,121,874.90 × 449,318.20
  4. Step 4: Simplify right side
    747,916.60x = 504,078,810,693.18
  5. Step 5: Solve for x
    x = 504,078,810,693.18/747,916.60
  6. Step 6: Final answer
    x = 673,977.30

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Double scale
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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.