Home / 643,066.11-887,367.29-371,221.56

Finding the Fourth Proportional to 643,066.11, 887,367.29 and 371,221.56

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Solution

The fourth proportional to 643,066.11, 887,367.29 and 371,221.56 is: 512,248.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,066.11 : 887,367.29 = 371,221.56 : x
  2. Step 2: Convert to fraction form
    643,066.11/887,367.29 = 371,221.56/x
  3. Step 3: Cross multiply
    643,066.11x = 887,367.29 × 371,221.56
  4. Step 4: Simplify right side
    643,066.11x = 329,409,867,830.67
  5. Step 5: Solve for x
    x = 329,409,867,830.67/643,066.11
  6. Step 6: Final answer
    x = 512,248.84

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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.