Home / 1,321,471.20-1,982,206.80-922,890.45

Finding the Fourth Proportional to 1,321,471.20, 1,982,206.80 and 922,890.45

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Solution

The fourth proportional to 1,321,471.20, 1,982,206.80 and 922,890.45 is: 1,384,335.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,471.20 : 1,982,206.80 = 922,890.45 : x
  2. Step 2: Convert to fraction form
    1,321,471.20/1,982,206.80 = 922,890.45/x
  3. Step 3: Cross multiply
    1,321,471.20x = 1,982,206.80 × 922,890.45
  4. Step 4: Simplify right side
    1,321,471.20x = 1,829,359,725,645.06
  5. Step 5: Solve for x
    x = 1,829,359,725,645.06/1,321,471.20
  6. Step 6: Final answer
    x = 1,384,335.68

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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.