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Finding the Fourth Proportional to 633,443.40, 873,934.92 and 361,314.72

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Solution

The fourth proportional to 633,443.40, 873,934.92 and 361,314.72 is: 498,490.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,443.40 : 873,934.92 = 361,314.72 : x
  2. Step 2: Convert to fraction form
    633,443.40/873,934.92 = 361,314.72/x
  3. Step 3: Cross multiply
    633,443.40x = 873,934.92 × 361,314.72
  4. Step 4: Simplify right side
    633,443.40x = 315,765,550,918.02
  5. Step 5: Solve for x
    x = 315,765,550,918.02/633,443.40
  6. Step 6: Final answer
    x = 498,490.55

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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.