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Finding the Fourth Proportional to 540,906.80, 811,360.20 and 292,074.80

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Solution

The fourth proportional to 540,906.80, 811,360.20 and 292,074.80 is: 438,112.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,906.80 : 811,360.20 = 292,074.80 : x
  2. Step 2: Convert to fraction form
    540,906.80/811,360.20 = 292,074.80/x
  3. Step 3: Cross multiply
    540,906.80x = 811,360.20 × 292,074.80
  4. Step 4: Simplify right side
    540,906.80x = 236,977,868,142.96
  5. Step 5: Solve for x
    x = 236,977,868,142.96/540,906.80
  6. Step 6: Final answer
    x = 438,112.20

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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.