Home / 728,578.16-1,005,442.20-406,308.60

Finding the Fourth Proportional to 728,578.16, 1,005,442.20 and 406,308.60

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Solution

The fourth proportional to 728,578.16, 1,005,442.20 and 406,308.60 is: 560,708.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,578.16 : 1,005,442.20 = 406,308.60 : x
  2. Step 2: Convert to fraction form
    728,578.16/1,005,442.20 = 406,308.60/x
  3. Step 3: Cross multiply
    728,578.16x = 1,005,442.20 × 406,308.60
  4. Step 4: Simplify right side
    728,578.16x = 408,519,812,662.92
  5. Step 5: Solve for x
    x = 408,519,812,662.92/728,578.16
  6. Step 6: Final answer
    x = 560,708.29

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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.