Home / 766,277.80-1,149,416.70-451,090.60

Finding the Fourth Proportional to 766,277.80, 1,149,416.70 and 451,090.60

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Solution

The fourth proportional to 766,277.80, 1,149,416.70 and 451,090.60 is: 676,635.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,277.80 : 1,149,416.70 = 451,090.60 : x
  2. Step 2: Convert to fraction form
    766,277.80/1,149,416.70 = 451,090.60/x
  3. Step 3: Cross multiply
    766,277.80x = 1,149,416.70 × 451,090.60
  4. Step 4: Simplify right side
    766,277.80x = 518,491,068,853.02
  5. Step 5: Solve for x
    x = 518,491,068,853.02/766,277.80
  6. Step 6: Final answer
    x = 676,635.90

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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.