Home / 656,335.80-982,535.40-389,959.20

Finding the Fourth Proportional to 656,335.80, 982,535.40 and 389,959.20

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Solution

The fourth proportional to 656,335.80, 982,535.40 and 389,959.20 is: 583,769.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,335.80 : 982,535.40 = 389,959.20 : x
  2. Step 2: Convert to fraction form
    656,335.80/982,535.40 = 389,959.20/x
  3. Step 3: Cross multiply
    656,335.80x = 982,535.40 × 389,959.20
  4. Step 4: Simplify right side
    656,335.80x = 383,148,718,555.68
  5. Step 5: Solve for x
    x = 383,148,718,555.68/656,335.80
  6. Step 6: Final answer
    x = 583,769.34

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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.