Home / 728,000.40-1,092,000.60-661,515.60

Finding the Fourth Proportional to 728,000.40, 1,092,000.60 and 661,515.60

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Solution

The fourth proportional to 728,000.40, 1,092,000.60 and 661,515.60 is: 992,273.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,000.40 : 1,092,000.60 = 661,515.60 : x
  2. Step 2: Convert to fraction form
    728,000.40/1,092,000.60 = 661,515.60/x
  3. Step 3: Cross multiply
    728,000.40x = 1,092,000.60 × 661,515.60
  4. Step 4: Simplify right side
    728,000.40x = 722,375,432,109.36
  5. Step 5: Solve for x
    x = 722,375,432,109.36/728,000.40
  6. Step 6: Final answer
    x = 992,273.40

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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.