Home / 1,131,911.64-1,562,031-641,974.68

Finding the Fourth Proportional to 1,131,911.64, 1,562,031 and 641,974.68

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Solution

The fourth proportional to 1,131,911.64, 1,562,031 and 641,974.68 is: 885,921.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,911.64 : 1,562,031 = 641,974.68 : x
  2. Step 2: Convert to fraction form
    1,131,911.64/1,562,031 = 641,974.68/x
  3. Step 3: Cross multiply
    1,131,911.64x = 1,562,031 × 641,974.68
  4. Step 4: Simplify right side
    1,131,911.64x = 1,002,784,351,375.08
  5. Step 5: Solve for x
    x = 1,002,784,351,375.08/1,131,911.64
  6. Step 6: Final answer
    x = 885,921.05

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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.