Home / 820,642.32-1,233,128.34-441,843.12

Finding the Fourth Proportional to 820,642.32, 1,233,128.34 and 441,843.12

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Solution

The fourth proportional to 820,642.32, 1,233,128.34 and 441,843.12 is: 663,930.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,642.32 : 1,233,128.34 = 441,843.12 : x
  2. Step 2: Convert to fraction form
    820,642.32/1,233,128.34 = 441,843.12/x
  3. Step 3: Cross multiply
    820,642.32x = 1,233,128.34 × 441,843.12
  4. Step 4: Simplify right side
    820,642.32x = 544,849,273,106.02
  5. Step 5: Solve for x
    x = 544,849,273,106.02/820,642.32
  6. Step 6: Final answer
    x = 663,930.27

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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.