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Finding the Fourth Proportional to 656,118.40, 981,844.80 and 455,497.60

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Solution

The fourth proportional to 656,118.40, 981,844.80 and 455,497.60 is: 681,626.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,118.40 : 981,844.80 = 455,497.60 : x
  2. Step 2: Convert to fraction form
    656,118.40/981,844.80 = 455,497.60/x
  3. Step 3: Cross multiply
    656,118.40x = 981,844.80 × 455,497.60
  4. Step 4: Simplify right side
    656,118.40x = 447,227,949,972.48
  5. Step 5: Solve for x
    x = 447,227,949,972.48/656,118.40
  6. Step 6: Final answer
    x = 681,626.90

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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.