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Finding the Fourth Proportional to 819,969.20, 1,230,472.20 and 483,009.20

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Solution

The fourth proportional to 819,969.20, 1,230,472.20 and 483,009.20 is: 724,819.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,969.20 : 1,230,472.20 = 483,009.20 : x
  2. Step 2: Convert to fraction form
    819,969.20/1,230,472.20 = 483,009.20/x
  3. Step 3: Cross multiply
    819,969.20x = 1,230,472.20 × 483,009.20
  4. Step 4: Simplify right side
    819,969.20x = 594,329,392,944.24
  5. Step 5: Solve for x
    x = 594,329,392,944.24/819,969.20
  6. Step 6: Final answer
    x = 724,819.17

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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.