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Finding the Fourth Proportional to 981,867.78, 1,472,786.85 and 441,742.60

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Solution

The fourth proportional to 981,867.78, 1,472,786.85 and 441,742.60 is: 662,607.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,867.78 : 1,472,786.85 = 441,742.60 : x
  2. Step 2: Convert to fraction form
    981,867.78/1,472,786.85 = 441,742.60/x
  3. Step 3: Cross multiply
    981,867.78x = 1,472,786.85 × 441,742.60
  4. Step 4: Simplify right side
    981,867.78x = 650,592,692,364.81
  5. Step 5: Solve for x
    x = 650,592,692,364.81/981,867.78
  6. Step 6: Final answer
    x = 662,607.23

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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.