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Finding the Fourth Proportional to 643,179.93, 887,470.94 and 371,148.57

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Solution

The fourth proportional to 643,179.93, 887,470.94 and 371,148.57 is: 512,117.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,179.93 : 887,470.94 = 371,148.57 : x
  2. Step 2: Convert to fraction form
    643,179.93/887,470.94 = 371,148.57/x
  3. Step 3: Cross multiply
    643,179.93x = 887,470.94 × 371,148.57
  4. Step 4: Simplify right side
    643,179.93x = 329,383,570,297.56
  5. Step 5: Solve for x
    x = 329,383,570,297.56/643,179.93
  6. Step 6: Final answer
    x = 512,117.30

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1.5x scale

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.