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Finding the Fourth Proportional to 541,003.20, 811,504.80 and 260,452.80

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Solution

The fourth proportional to 541,003.20, 811,504.80 and 260,452.80 is: 390,679.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,003.20 : 811,504.80 = 260,452.80 : x
  2. Step 2: Convert to fraction form
    541,003.20/811,504.80 = 260,452.80/x
  3. Step 3: Cross multiply
    541,003.20x = 811,504.80 × 260,452.80
  4. Step 4: Simplify right side
    541,003.20x = 211,358,697,373.44
  5. Step 5: Solve for x
    x = 211,358,697,373.44/541,003.20
  6. Step 6: Final answer
    x = 390,679.20

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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.