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Finding the Fourth Proportional to 495,560.80, 743,341.20 and 408,080.80

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Solution

The fourth proportional to 495,560.80, 743,341.20 and 408,080.80 is: 612,121.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,560.80 : 743,341.20 = 408,080.80 : x
  2. Step 2: Convert to fraction form
    495,560.80/743,341.20 = 408,080.80/x
  3. Step 3: Cross multiply
    495,560.80x = 743,341.20 × 408,080.80
  4. Step 4: Simplify right side
    495,560.80x = 303,343,271,568.96
  5. Step 5: Solve for x
    x = 303,343,271,568.96/495,560.80
  6. Step 6: Final answer
    x = 612,121.20

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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.