Home / 728,107.20-1,092,160.80-515,530.80

Finding the Fourth Proportional to 728,107.20, 1,092,160.80 and 515,530.80

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Solution

The fourth proportional to 728,107.20, 1,092,160.80 and 515,530.80 is: 773,296.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,107.20 : 1,092,160.80 = 515,530.80 : x
  2. Step 2: Convert to fraction form
    728,107.20/1,092,160.80 = 515,530.80/x
  3. Step 3: Cross multiply
    728,107.20x = 1,092,160.80 × 515,530.80
  4. Step 4: Simplify right side
    728,107.20x = 563,042,530,952.64
  5. Step 5: Solve for x
    x = 563,042,530,952.64/728,107.20
  6. Step 6: Final answer
    x = 773,296.20

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.