Home / 728,374.54-1,005,161.08-406,104.70

Finding the Fourth Proportional to 728,374.54, 1,005,161.08 and 406,104.70

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Solution

The fourth proportional to 728,374.54, 1,005,161.08 and 406,104.70 is: 560,426.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,374.54 : 1,005,161.08 = 406,104.70 : x
  2. Step 2: Convert to fraction form
    728,374.54/1,005,161.08 = 406,104.70/x
  3. Step 3: Cross multiply
    728,374.54x = 1,005,161.08 × 406,104.70
  4. Step 4: Simplify right side
    728,374.54x = 408,200,634,301.65
  5. Step 5: Solve for x
    x = 408,200,634,301.65/728,374.54
  6. Step 6: Final answer
    x = 560,426.83

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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.