Home / 855,040.80-1,281,759.30-322,919.40

Finding the Fourth Proportional to 855,040.80, 1,281,759.30 and 322,919.40

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Solution

The fourth proportional to 855,040.80, 1,281,759.30 and 322,919.40 is: 484,076.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,040.80 : 1,281,759.30 = 322,919.40 : x
  2. Step 2: Convert to fraction form
    855,040.80/1,281,759.30 = 322,919.40/x
  3. Step 3: Cross multiply
    855,040.80x = 1,281,759.30 × 322,919.40
  4. Step 4: Simplify right side
    855,040.80x = 413,904,944,100.42
  5. Step 5: Solve for x
    x = 413,904,944,100.42/855,040.80
  6. Step 6: Final answer
    x = 484,076.25

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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.