Home / 748,538.60-1,123,512.60-393,807.20

Finding the Fourth Proportional to 748,538.60, 1,123,512.60 and 393,807.20

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Solution

The fourth proportional to 748,538.60, 1,123,512.60 and 393,807.20 is: 591,081.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    748,538.60 : 1,123,512.60 = 393,807.20 : x
  2. Step 2: Convert to fraction form
    748,538.60/1,123,512.60 = 393,807.20/x
  3. Step 3: Cross multiply
    748,538.60x = 1,123,512.60 × 393,807.20
  4. Step 4: Simplify right side
    748,538.60x = 442,447,351,170.72
  5. Step 5: Solve for x
    x = 442,447,351,170.72/748,538.60
  6. Step 6: Final answer
    x = 591,081.54

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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.