Home / 731,760.40-1,009,876.20-409,507.60

Finding the Fourth Proportional to 731,760.40, 1,009,876.20 and 409,507.60

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Solution

The fourth proportional to 731,760.40, 1,009,876.20 and 409,507.60 is: 565,146.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    731,760.40 : 1,009,876.20 = 409,507.60 : x
  2. Step 2: Convert to fraction form
    731,760.40/1,009,876.20 = 409,507.60/x
  3. Step 3: Cross multiply
    731,760.40x = 1,009,876.20 × 409,507.60
  4. Step 4: Simplify right side
    731,760.40x = 413,551,978,959.12
  5. Step 5: Solve for x
    x = 413,551,978,959.12/731,760.40
  6. Step 6: Final answer
    x = 565,146.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.