Home / 728,349.48-1,005,131.16-422,496.72

Finding the Fourth Proportional to 728,349.48, 1,005,131.16 and 422,496.72

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Solution

The fourth proportional to 728,349.48, 1,005,131.16 and 422,496.72 is: 583,050.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,349.48 : 1,005,131.16 = 422,496.72 : x
  2. Step 2: Convert to fraction form
    728,349.48/1,005,131.16 = 422,496.72/x
  3. Step 3: Cross multiply
    728,349.48x = 1,005,131.16 × 422,496.72
  4. Step 4: Simplify right side
    728,349.48x = 424,664,618,269.80
  5. Step 5: Solve for x
    x = 424,664,618,269.80/728,349.48
  6. Step 6: Final answer
    x = 583,050.62

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.