Home / 728,315.96-1,005,080.40-406,046.52

Finding the Fourth Proportional to 728,315.96, 1,005,080.40 and 406,046.52

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Solution

The fourth proportional to 728,315.96, 1,005,080.40 and 406,046.52 is: 560,346.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,315.96 : 1,005,080.40 = 406,046.52 : x
  2. Step 2: Convert to fraction form
    728,315.96/1,005,080.40 = 406,046.52/x
  3. Step 3: Cross multiply
    728,315.96x = 1,005,080.40 × 406,046.52
  4. Step 4: Simplify right side
    728,315.96x = 408,109,398,740.21
  5. Step 5: Solve for x
    x = 408,109,398,740.21/728,315.96
  6. Step 6: Final answer
    x = 560,346.64

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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.