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Finding the Fourth Proportional to 719,791.20, 1,079,686.80 and 607,816.80

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Solution

The fourth proportional to 719,791.20, 1,079,686.80 and 607,816.80 is: 911,725.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,791.20 : 1,079,686.80 = 607,816.80 : x
  2. Step 2: Convert to fraction form
    719,791.20/1,079,686.80 = 607,816.80/x
  3. Step 3: Cross multiply
    719,791.20x = 1,079,686.80 × 607,816.80
  4. Step 4: Simplify right side
    719,791.20x = 656,251,775,778.24
  5. Step 5: Solve for x
    x = 656,251,775,778.24/719,791.20
  6. Step 6: Final answer
    x = 911,725.20

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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.