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Finding the Fourth Proportional to 656,671.19, 906,167.25 and 381,007.71

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Solution

The fourth proportional to 656,671.19, 906,167.25 and 381,007.71 is: 525,768.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,671.19 : 906,167.25 = 381,007.71 : x
  2. Step 2: Convert to fraction form
    656,671.19/906,167.25 = 381,007.71/x
  3. Step 3: Cross multiply
    656,671.19x = 906,167.25 × 381,007.71
  4. Step 4: Simplify right side
    656,671.19x = 345,256,708,799.50
  5. Step 5: Solve for x
    x = 345,256,708,799.50/656,671.19
  6. Step 6: Final answer
    x = 525,768.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.