Home / 747,351.60-1,121,027.40-411,428.40

Finding the Fourth Proportional to 747,351.60, 1,121,027.40 and 411,428.40

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Solution

The fourth proportional to 747,351.60, 1,121,027.40 and 411,428.40 is: 617,142.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,351.60 : 1,121,027.40 = 411,428.40 : x
  2. Step 2: Convert to fraction form
    747,351.60/1,121,027.40 = 411,428.40/x
  3. Step 3: Cross multiply
    747,351.60x = 1,121,027.40 × 411,428.40
  4. Step 4: Simplify right side
    747,351.60x = 461,222,509,538.16
  5. Step 5: Solve for x
    x = 461,222,509,538.16/747,351.60
  6. Step 6: Final answer
    x = 617,142.60

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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.