Home / 781,690.80-1,171,661.40-332,335.20

Finding the Fourth Proportional to 781,690.80, 1,171,661.40 and 332,335.20

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Solution

The fourth proportional to 781,690.80, 1,171,661.40 and 332,335.20 is: 498,130.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,690.80 : 1,171,661.40 = 332,335.20 : x
  2. Step 2: Convert to fraction form
    781,690.80/1,171,661.40 = 332,335.20/x
  3. Step 3: Cross multiply
    781,690.80x = 1,171,661.40 × 332,335.20
  4. Step 4: Simplify right side
    781,690.80x = 389,384,325,701.28
  5. Step 5: Solve for x
    x = 389,384,325,701.28/781,690.80
  6. Step 6: Final answer
    x = 498,130.88

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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.