Home / 728,316.35-1,005,073.38-422,454.68

Finding the Fourth Proportional to 728,316.35, 1,005,073.38 and 422,454.68

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Solution

The fourth proportional to 728,316.35, 1,005,073.38 and 422,454.68 is: 582,985.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,316.35 : 1,005,073.38 = 422,454.68 : x
  2. Step 2: Convert to fraction form
    728,316.35/1,005,073.38 = 422,454.68/x
  3. Step 3: Cross multiply
    728,316.35x = 1,005,073.38 × 422,454.68
  4. Step 4: Simplify right side
    728,316.35x = 424,597,953,124.42
  5. Step 5: Solve for x
    x = 424,597,953,124.42/728,316.35
  6. Step 6: Final answer
    x = 582,985.61

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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.