Home / 728,296.28-1,005,053.15-422,554.69

Finding the Fourth Proportional to 728,296.28, 1,005,053.15 and 422,554.69

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Solution

The fourth proportional to 728,296.28, 1,005,053.15 and 422,554.69 is: 583,127.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,296.28 : 1,005,053.15 = 422,554.69 : x
  2. Step 2: Convert to fraction form
    728,296.28/1,005,053.15 = 422,554.69/x
  3. Step 3: Cross multiply
    728,296.28x = 1,005,053.15 × 422,554.69
  4. Step 4: Simplify right side
    728,296.28x = 424,689,924,544.48
  5. Step 5: Solve for x
    x = 424,689,924,544.48/728,296.28
  6. Step 6: Final answer
    x = 583,127.96

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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.