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Finding the Fourth Proportional to 2,981,860.40, 4,469,291.40 and 1,276,000.40

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Solution

The fourth proportional to 2,981,860.40, 4,469,291.40 and 1,276,000.40 is: 1,912,503.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981,860.40 : 4,469,291.40 = 1,276,000.40 : x
  2. Step 2: Convert to fraction form
    2,981,860.40/4,469,291.40 = 1,276,000.40/x
  3. Step 3: Cross multiply
    2,981,860.40x = 4,469,291.40 × 1,276,000.40
  4. Step 4: Simplify right side
    2,981,860.40x = 5,702,817,614,116.56
  5. Step 5: Solve for x
    x = 5,702,817,614,116.56/2,981,860.40
  6. Step 6: Final answer
    x = 1,912,503.22

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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.