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Finding the Fourth Proportional to 655,620.80, 983,431.20 and 256,274.60

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Solution

The fourth proportional to 655,620.80, 983,431.20 and 256,274.60 is: 384,411.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,620.80 : 983,431.20 = 256,274.60 : x
  2. Step 2: Convert to fraction form
    655,620.80/983,431.20 = 256,274.60/x
  3. Step 3: Cross multiply
    655,620.80x = 983,431.20 × 256,274.60
  4. Step 4: Simplify right side
    655,620.80x = 252,028,437,407.52
  5. Step 5: Solve for x
    x = 252,028,437,407.52/655,620.80
  6. Step 6: Final answer
    x = 384,411.90

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Similar ratio
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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.