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Finding the Fourth Proportional to 766,958.40, 1,150,437.60 and 487,713.60

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Solution

The fourth proportional to 766,958.40, 1,150,437.60 and 487,713.60 is: 731,570.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,958.40 : 1,150,437.60 = 487,713.60 : x
  2. Step 2: Convert to fraction form
    766,958.40/1,150,437.60 = 487,713.60/x
  3. Step 3: Cross multiply
    766,958.40x = 1,150,437.60 × 487,713.60
  4. Step 4: Simplify right side
    766,958.40x = 561,084,063,471.36
  5. Step 5: Solve for x
    x = 561,084,063,471.36/766,958.40
  6. Step 6: Final answer
    x = 731,570.40

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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.