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Finding the Fourth Proportional to 549,008.20, 823,512.30 and 543,759.40

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Solution

The fourth proportional to 549,008.20, 823,512.30 and 543,759.40 is: 815,639.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,008.20 : 823,512.30 = 543,759.40 : x
  2. Step 2: Convert to fraction form
    549,008.20/823,512.30 = 543,759.40/x
  3. Step 3: Cross multiply
    549,008.20x = 823,512.30 × 543,759.40
  4. Step 4: Simplify right side
    549,008.20x = 447,792,554,140.62
  5. Step 5: Solve for x
    x = 447,792,554,140.62/549,008.20
  6. Step 6: Final answer
    x = 815,639.10

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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.