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Finding the Fourth Proportional to 1,615,952.62, 2,229,986.68 and 890,867.80

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Solution

The fourth proportional to 1,615,952.62, 2,229,986.68 and 890,867.80 is: 1,229,382.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,615,952.62 : 2,229,986.68 = 890,867.80 : x
  2. Step 2: Convert to fraction form
    1,615,952.62/2,229,986.68 = 890,867.80/x
  3. Step 3: Cross multiply
    1,615,952.62x = 2,229,986.68 × 890,867.80
  4. Step 4: Simplify right side
    1,615,952.62x = 1,986,623,327,640.90
  5. Step 5: Solve for x
    x = 1,986,623,327,640.90/1,615,952.62
  6. Step 6: Final answer
    x = 1,229,382.16

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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.