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Finding the Fourth Proportional to 2,979,909.20, 4,469,863.80 and 736,047.20

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Solution

The fourth proportional to 2,979,909.20, 4,469,863.80 and 736,047.20 is: 1,104,070.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979,909.20 : 4,469,863.80 = 736,047.20 : x
  2. Step 2: Convert to fraction form
    2,979,909.20/4,469,863.80 = 736,047.20/x
  3. Step 3: Cross multiply
    2,979,909.20x = 4,469,863.80 × 736,047.20
  4. Step 4: Simplify right side
    2,979,909.20x = 3,290,030,734,371.36
  5. Step 5: Solve for x
    x = 3,290,030,734,371.36/2,979,909.20
  6. Step 6: Final answer
    x = 1,104,070.80

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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.