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Finding the Fourth Proportional to 655,626.80, 983,440.20 and 256,280.60

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Solution

The fourth proportional to 655,626.80, 983,440.20 and 256,280.60 is: 384,420.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,626.80 : 983,440.20 = 256,280.60 : x
  2. Step 2: Convert to fraction form
    655,626.80/983,440.20 = 256,280.60/x
  3. Step 3: Cross multiply
    655,626.80x = 983,440.20 × 256,280.60
  4. Step 4: Simplify right side
    655,626.80x = 252,036,644,520.12
  5. Step 5: Solve for x
    x = 252,036,644,520.12/655,626.80
  6. Step 6: Final answer
    x = 384,420.90

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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.