Home / 728,288.92-1,005,034.56-406,001.68

Finding the Fourth Proportional to 728,288.92, 1,005,034.56 and 406,001.68

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Solution

The fourth proportional to 728,288.92, 1,005,034.56 and 406,001.68 is: 560,280.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,288.92 : 1,005,034.56 = 406,001.68 : x
  2. Step 2: Convert to fraction form
    728,288.92/1,005,034.56 = 406,001.68/x
  3. Step 3: Cross multiply
    728,288.92x = 1,005,034.56 × 406,001.68
  4. Step 4: Simplify right side
    728,288.92x = 408,045,719,818.06
  5. Step 5: Solve for x
    x = 408,045,719,818.06/728,288.92
  6. Step 6: Final answer
    x = 560,280.01

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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.