Home / 728,758.89-1,005,166.67-631,789.40

Finding the Fourth Proportional to 728,758.89, 1,005,166.67 and 631,789.40

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Solution

The fourth proportional to 728,758.89, 1,005,166.67 and 631,789.40 is: 871,418.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,758.89 : 1,005,166.67 = 631,789.40 : x
  2. Step 2: Convert to fraction form
    728,758.89/1,005,166.67 = 631,789.40/x
  3. Step 3: Cross multiply
    728,758.89x = 1,005,166.67 × 631,789.40
  4. Step 4: Simplify right side
    728,758.89x = 635,053,646,693.27
  5. Step 5: Solve for x
    x = 635,053,646,693.27/728,758.89
  6. Step 6: Final answer
    x = 871,418.04

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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.