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Finding the Fourth Proportional to 981,671.40, 1,472,069.70 and 449,355.60

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Solution

The fourth proportional to 981,671.40, 1,472,069.70 and 449,355.60 is: 673,833.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,671.40 : 1,472,069.70 = 449,355.60 : x
  2. Step 2: Convert to fraction form
    981,671.40/1,472,069.70 = 449,355.60/x
  3. Step 3: Cross multiply
    981,671.40x = 1,472,069.70 × 449,355.60
  4. Step 4: Simplify right side
    981,671.40x = 661,482,763,285.32
  5. Step 5: Solve for x
    x = 661,482,763,285.32/981,671.40
  6. Step 6: Final answer
    x = 673,833.18

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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.