Home / 728,544.64-1,005,397.32-406,275.60

Finding the Fourth Proportional to 728,544.64, 1,005,397.32 and 406,275.60

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Solution

The fourth proportional to 728,544.64, 1,005,397.32 and 406,275.60 is: 560,663.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,544.64 : 1,005,397.32 = 406,275.60 : x
  2. Step 2: Convert to fraction form
    728,544.64/1,005,397.32 = 406,275.60/x
  3. Step 3: Cross multiply
    728,544.64x = 1,005,397.32 × 406,275.60
  4. Step 4: Simplify right side
    728,544.64x = 408,468,399,421.39
  5. Step 5: Solve for x
    x = 408,468,399,421.39/728,544.64
  6. Step 6: Final answer
    x = 560,663.52

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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.