Home / 747,487.60-1,121,231.40-274,015.60

Finding the Fourth Proportional to 747,487.60, 1,121,231.40 and 274,015.60

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Solution

The fourth proportional to 747,487.60, 1,121,231.40 and 274,015.60 is: 411,023.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,487.60 : 1,121,231.40 = 274,015.60 : x
  2. Step 2: Convert to fraction form
    747,487.60/1,121,231.40 = 274,015.60/x
  3. Step 3: Cross multiply
    747,487.60x = 1,121,231.40 × 274,015.60
  4. Step 4: Simplify right side
    747,487.60x = 307,234,894,809.84
  5. Step 5: Solve for x
    x = 307,234,894,809.84/747,487.60
  6. Step 6: Final answer
    x = 411,023.40

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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.