Home / 728,453.32-1,005,214.26-406,149.64

Finding the Fourth Proportional to 728,453.32, 1,005,214.26 and 406,149.64

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Solution

The fourth proportional to 728,453.32, 1,005,214.26 and 406,149.64 is: 560,457.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,453.32 : 1,005,214.26 = 406,149.64 : x
  2. Step 2: Convert to fraction form
    728,453.32/1,005,214.26 = 406,149.64/x
  3. Step 3: Cross multiply
    728,453.32x = 1,005,214.26 × 406,149.64
  4. Step 4: Simplify right side
    728,453.32x = 408,267,409,821.87
  5. Step 5: Solve for x
    x = 408,267,409,821.87/728,453.32
  6. Step 6: Final answer
    x = 560,457.89

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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.