Home / 820,883.40-1,231,448.22-288,310.56

Finding the Fourth Proportional to 820,883.40, 1,231,448.22 and 288,310.56

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Solution

The fourth proportional to 820,883.40, 1,231,448.22 and 288,310.56 is: 432,509.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,883.40 : 1,231,448.22 = 288,310.56 : x
  2. Step 2: Convert to fraction form
    820,883.40/1,231,448.22 = 288,310.56/x
  3. Step 3: Cross multiply
    820,883.40x = 1,231,448.22 × 288,310.56
  4. Step 4: Simplify right side
    820,883.40x = 355,039,525,919.20
  5. Step 5: Solve for x
    x = 355,039,525,919.20/820,883.40
  6. Step 6: Final answer
    x = 432,509.08

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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.