Home / 820,633.48-1,231,012.47-221,585.92

Finding the Fourth Proportional to 820,633.48, 1,231,012.47 and 221,585.92

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Solution

The fourth proportional to 820,633.48, 1,231,012.47 and 221,585.92 is: 332,395.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,633.48 : 1,231,012.47 = 221,585.92 : x
  2. Step 2: Convert to fraction form
    820,633.48/1,231,012.47 = 221,585.92/x
  3. Step 3: Cross multiply
    820,633.48x = 1,231,012.47 × 221,585.92
  4. Step 4: Simplify right side
    820,633.48x = 272,775,030,696.42
  5. Step 5: Solve for x
    x = 272,775,030,696.42/820,633.48
  6. Step 6: Final answer
    x = 332,395.69

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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.