Home / 728,720.06-1,005,635.48-406,451.03

Finding the Fourth Proportional to 728,720.06, 1,005,635.48 and 406,451.03

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Solution

The fourth proportional to 728,720.06, 1,005,635.48 and 406,451.03 is: 560,903.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,720.06 : 1,005,635.48 = 406,451.03 : x
  2. Step 2: Convert to fraction form
    728,720.06/1,005,635.48 = 406,451.03/x
  3. Step 3: Cross multiply
    728,720.06x = 1,005,635.48 × 406,451.03
  4. Step 4: Simplify right side
    728,720.06x = 408,741,569,590.11
  5. Step 5: Solve for x
    x = 408,741,569,590.11/728,720.06
  6. Step 6: Final answer
    x = 560,903.42

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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.