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Finding the Fourth Proportional to 966,410.80, 1,449,616.20 and 256,548.40

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Solution

The fourth proportional to 966,410.80, 1,449,616.20 and 256,548.40 is: 384,822.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    966,410.80 : 1,449,616.20 = 256,548.40 : x
  2. Step 2: Convert to fraction form
    966,410.80/1,449,616.20 = 256,548.40/x
  3. Step 3: Cross multiply
    966,410.80x = 1,449,616.20 × 256,548.40
  4. Step 4: Simplify right side
    966,410.80x = 371,896,716,724.08
  5. Step 5: Solve for x
    x = 371,896,716,724.08/966,410.80
  6. Step 6: Final answer
    x = 384,822.60

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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.