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Finding the Fourth Proportional to 2,488,608.80, 3,732,913.20 and 806,919.20

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Solution

The fourth proportional to 2,488,608.80, 3,732,913.20 and 806,919.20 is: 1,210,378.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,488,608.80 : 3,732,913.20 = 806,919.20 : x
  2. Step 2: Convert to fraction form
    2,488,608.80/3,732,913.20 = 806,919.20/x
  3. Step 3: Cross multiply
    2,488,608.80x = 3,732,913.20 × 806,919.20
  4. Step 4: Simplify right side
    2,488,608.80x = 3,012,159,333,013.44
  5. Step 5: Solve for x
    x = 3,012,159,333,013.44/2,488,608.80
  6. Step 6: Final answer
    x = 1,210,378.80

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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.