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Finding the Fourth Proportional to 1,216,761.76, 1,824,209.52 and 743,669.92

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Solution

The fourth proportional to 1,216,761.76, 1,824,209.52 and 743,669.92 is: 1,114,934.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,761.76 : 1,824,209.52 = 743,669.92 : x
  2. Step 2: Convert to fraction form
    1,216,761.76/1,824,209.52 = 743,669.92/x
  3. Step 3: Cross multiply
    1,216,761.76x = 1,824,209.52 × 743,669.92
  4. Step 4: Simplify right side
    1,216,761.76x = 1,356,609,747,801.64
  5. Step 5: Solve for x
    x = 1,356,609,747,801.64/1,216,761.76
  6. Step 6: Final answer
    x = 1,114,934.57

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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.