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Finding the Fourth Proportional to 1,719,255.80, 2,578,883.70 and 1,646,449.40

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Solution

The fourth proportional to 1,719,255.80, 2,578,883.70 and 1,646,449.40 is: 2,469,674.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,719,255.80 : 2,578,883.70 = 1,646,449.40 : x
  2. Step 2: Convert to fraction form
    1,719,255.80/2,578,883.70 = 1,646,449.40/x
  3. Step 3: Cross multiply
    1,719,255.80x = 2,578,883.70 × 1,646,449.40
  4. Step 4: Simplify right side
    1,719,255.80x = 4,246,001,520,534.78
  5. Step 5: Solve for x
    x = 4,246,001,520,534.78/1,719,255.80
  6. Step 6: Final answer
    x = 2,469,674.10

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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.