Home / 621,117.12-931,446.48-221,651.04

Finding the Fourth Proportional to 621,117.12, 931,446.48 and 221,651.04

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Solution

The fourth proportional to 621,117.12, 931,446.48 and 221,651.04 is: 332,394.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,117.12 : 931,446.48 = 221,651.04 : x
  2. Step 2: Convert to fraction form
    621,117.12/931,446.48 = 221,651.04/x
  3. Step 3: Cross multiply
    621,117.12x = 931,446.48 × 221,651.04
  4. Step 4: Simplify right side
    621,117.12x = 206,456,080,996.34
  5. Step 5: Solve for x
    x = 206,456,080,996.34/621,117.12
  6. Step 6: Final answer
    x = 332,394.77

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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.