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Finding the Fourth Proportional to 543,028.80, 814,543.20 and 330,452.40

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Solution

The fourth proportional to 543,028.80, 814,543.20 and 330,452.40 is: 495,678.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,028.80 : 814,543.20 = 330,452.40 : x
  2. Step 2: Convert to fraction form
    543,028.80/814,543.20 = 330,452.40/x
  3. Step 3: Cross multiply
    543,028.80x = 814,543.20 × 330,452.40
  4. Step 4: Simplify right side
    543,028.80x = 269,167,755,343.68
  5. Step 5: Solve for x
    x = 269,167,755,343.68/543,028.80
  6. Step 6: Final answer
    x = 495,678.60

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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.