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Finding the Fourth Proportional to 2,496,656.80, 3,745,906.80 and 813,815.20

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Solution

The fourth proportional to 2,496,656.80, 3,745,906.80 and 813,815.20 is: 1,221,023.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,496,656.80 : 3,745,906.80 = 813,815.20 : x
  2. Step 2: Convert to fraction form
    2,496,656.80/3,745,906.80 = 813,815.20/x
  3. Step 3: Cross multiply
    2,496,656.80x = 3,745,906.80 × 813,815.20
  4. Step 4: Simplify right side
    2,496,656.80x = 3,048,475,891,623.36
  5. Step 5: Solve for x
    x = 3,048,475,891,623.36/2,496,656.80
  6. Step 6: Final answer
    x = 1,221,023.21

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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.