Home / 821,760.80-1,232,641.20-260,839.20

Finding the Fourth Proportional to 821,760.80, 1,232,641.20 and 260,839.20

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Solution

The fourth proportional to 821,760.80, 1,232,641.20 and 260,839.20 is: 391,258.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,760.80 : 1,232,641.20 = 260,839.20 : x
  2. Step 2: Convert to fraction form
    821,760.80/1,232,641.20 = 260,839.20/x
  3. Step 3: Cross multiply
    821,760.80x = 1,232,641.20 × 260,839.20
  4. Step 4: Simplify right side
    821,760.80x = 321,521,144,495.04
  5. Step 5: Solve for x
    x = 321,521,144,495.04/821,760.80
  6. Step 6: Final answer
    x = 391,258.80

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1.5x scale

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.