Home / 728,454.32-1,005,215.64-406,150.64

Finding the Fourth Proportional to 728,454.32, 1,005,215.64 and 406,150.64

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Solution

The fourth proportional to 728,454.32, 1,005,215.64 and 406,150.64 is: 560,459.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,454.32 : 1,005,215.64 = 406,150.64 : x
  2. Step 2: Convert to fraction form
    728,454.32/1,005,215.64 = 406,150.64/x
  3. Step 3: Cross multiply
    728,454.32x = 1,005,215.64 × 406,150.64
  4. Step 4: Simplify right side
    728,454.32x = 408,268,975,524.01
  5. Step 5: Solve for x
    x = 408,268,975,524.01/728,454.32
  6. Step 6: Final answer
    x = 560,459.27

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Double scale
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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.