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Finding the Fourth Proportional to 1,216,769.76, 1,824,221.52 and 743,677.92

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Solution

The fourth proportional to 1,216,769.76, 1,824,221.52 and 743,677.92 is: 1,114,946.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,769.76 : 1,824,221.52 = 743,677.92 : x
  2. Step 2: Convert to fraction form
    1,216,769.76/1,824,221.52 = 743,677.92/x
  3. Step 3: Cross multiply
    1,216,769.76x = 1,824,221.52 × 743,677.92
  4. Step 4: Simplify right side
    1,216,769.76x = 1,356,633,265,612.84
  5. Step 5: Solve for x
    x = 1,356,633,265,612.84/1,216,769.76
  6. Step 6: Final answer
    x = 1,114,946.57

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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.