Home / 819,341.68-1,229,012.50-258,419.92

Finding the Fourth Proportional to 819,341.68, 1,229,012.50 and 258,419.92

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Solution

The fourth proportional to 819,341.68, 1,229,012.50 and 258,419.92 is: 387,629.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,341.68 : 1,229,012.50 = 258,419.92 : x
  2. Step 2: Convert to fraction form
    819,341.68/1,229,012.50 = 258,419.92/x
  3. Step 3: Cross multiply
    819,341.68x = 1,229,012.50 × 258,419.92
  4. Step 4: Simplify right side
    819,341.68x = 317,601,311,929
  5. Step 5: Solve for x
    x = 317,601,311,929/819,341.68
  6. Step 6: Final answer
    x = 387,629.87

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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.