Home / 726,514.38-1,089,812.51-221,091.80

Finding the Fourth Proportional to 726,514.38, 1,089,812.51 and 221,091.80

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Solution

The fourth proportional to 726,514.38, 1,089,812.51 and 221,091.80 is: 331,650.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,514.38 : 1,089,812.51 = 221,091.80 : x
  2. Step 2: Convert to fraction form
    726,514.38/1,089,812.51 = 221,091.80/x
  3. Step 3: Cross multiply
    726,514.38x = 1,089,812.51 × 221,091.80
  4. Step 4: Simplify right side
    726,514.38x = 240,948,602,943.90
  5. Step 5: Solve for x
    x = 240,948,602,943.90/726,514.38
  6. Step 6: Final answer
    x = 331,650.15

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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.