Home / 820,005.18-1,131,635.26-475,815.12

Finding the Fourth Proportional to 820,005.18, 1,131,635.26 and 475,815.12

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Solution

The fourth proportional to 820,005.18, 1,131,635.26 and 475,815.12 is: 656,641.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,005.18 : 1,131,635.26 = 475,815.12 : x
  2. Step 2: Convert to fraction form
    820,005.18/1,131,635.26 = 475,815.12/x
  3. Step 3: Cross multiply
    820,005.18x = 1,131,635.26 × 475,815.12
  4. Step 4: Simplify right side
    820,005.18x = 538,449,167,033.13
  5. Step 5: Solve for x
    x = 538,449,167,033.13/820,005.18
  6. Step 6: Final answer
    x = 656,641.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.