Home / 931,672.86-1,286,107.65-641,691.24

Finding the Fourth Proportional to 931,672.86, 1,286,107.65 and 641,691.24

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Solution

The fourth proportional to 931,672.86, 1,286,107.65 and 641,691.24 is: 885,808.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    931,672.86 : 1,286,107.65 = 641,691.24 : x
  2. Step 2: Convert to fraction form
    931,672.86/1,286,107.65 = 641,691.24/x
  3. Step 3: Cross multiply
    931,672.86x = 1,286,107.65 × 641,691.24
  4. Step 4: Simplify right side
    931,672.86x = 825,284,012,701.99
  5. Step 5: Solve for x
    x = 825,284,012,701.99/931,672.86
  6. Step 6: Final answer
    x = 885,808.79

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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.