Home / 728,674.79-1,005,584.15-406,350.28

Finding the Fourth Proportional to 728,674.79, 1,005,584.15 and 406,350.28

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Solution

The fourth proportional to 728,674.79, 1,005,584.15 and 406,350.28 is: 560,770.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,674.79 : 1,005,584.15 = 406,350.28 : x
  2. Step 2: Convert to fraction form
    728,674.79/1,005,584.15 = 406,350.28/x
  3. Step 3: Cross multiply
    728,674.79x = 1,005,584.15 × 406,350.28
  4. Step 4: Simplify right side
    728,674.79x = 408,619,396,370.35
  5. Step 5: Solve for x
    x = 408,619,396,370.35/728,674.79
  6. Step 6: Final answer
    x = 560,770.59

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Half scale
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Double scale
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Similar ratio
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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.