Home / 728,674.98-1,005,584.40-406,350.47

Finding the Fourth Proportional to 728,674.98, 1,005,584.40 and 406,350.47

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Solution

The fourth proportional to 728,674.98, 1,005,584.40 and 406,350.47 is: 560,770.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,674.98 : 1,005,584.40 = 406,350.47 : x
  2. Step 2: Convert to fraction form
    728,674.98/1,005,584.40 = 406,350.47/x
  3. Step 3: Cross multiply
    728,674.98x = 1,005,584.40 × 406,350.47
  4. Step 4: Simplify right side
    728,674.98x = 408,619,688,536.75
  5. Step 5: Solve for x
    x = 408,619,688,536.75/728,674.98
  6. Step 6: Final answer
    x = 560,770.85

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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.