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Finding the Fourth Proportional to 966,425.80, 1,449,638.70 and 256,563.40

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Solution

The fourth proportional to 966,425.80, 1,449,638.70 and 256,563.40 is: 384,845.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    966,425.80 : 1,449,638.70 = 256,563.40 : x
  2. Step 2: Convert to fraction form
    966,425.80/1,449,638.70 = 256,563.40/x
  3. Step 3: Cross multiply
    966,425.80x = 1,449,638.70 × 256,563.40
  4. Step 4: Simplify right side
    966,425.80x = 371,924,233,643.58
  5. Step 5: Solve for x
    x = 371,924,233,643.58/966,425.80
  6. Step 6: Final answer
    x = 384,845.10

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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.