Home / 728,425.20-1,091,471.40-461,708.40

Finding the Fourth Proportional to 728,425.20, 1,091,471.40 and 461,708.40

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Solution

The fourth proportional to 728,425.20, 1,091,471.40 and 461,708.40 is: 691,823.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,425.20 : 1,091,471.40 = 461,708.40 : x
  2. Step 2: Convert to fraction form
    728,425.20/1,091,471.40 = 461,708.40/x
  3. Step 3: Cross multiply
    728,425.20x = 1,091,471.40 × 461,708.40
  4. Step 4: Simplify right side
    728,425.20x = 503,941,513,739.76
  5. Step 5: Solve for x
    x = 503,941,513,739.76/728,425.20
  6. Step 6: Final answer
    x = 691,823.28

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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.