Home / 728,334.09-1,005,154.25-422,514.95

Finding the Fourth Proportional to 728,334.09, 1,005,154.25 and 422,514.95

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Solution

The fourth proportional to 728,334.09, 1,005,154.25 and 422,514.95 is: 583,101.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,334.09 : 1,005,154.25 = 422,514.95 : x
  2. Step 2: Convert to fraction form
    728,334.09/1,005,154.25 = 422,514.95/x
  3. Step 3: Cross multiply
    728,334.09x = 1,005,154.25 × 422,514.95
  4. Step 4: Simplify right side
    728,334.09x = 424,692,690,542.69
  5. Step 5: Solve for x
    x = 424,692,690,542.69/728,334.09
  6. Step 6: Final answer
    x = 583,101.49

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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.