Home / 643,133.94-965,279.09-343,870.32

Finding the Fourth Proportional to 643,133.94, 965,279.09 and 343,870.32

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Solution

The fourth proportional to 643,133.94, 965,279.09 and 343,870.32 is: 516,114.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,133.94 : 965,279.09 = 343,870.32 : x
  2. Step 2: Convert to fraction form
    643,133.94/965,279.09 = 343,870.32/x
  3. Step 3: Cross multiply
    643,133.94x = 965,279.09 × 343,870.32
  4. Step 4: Simplify right side
    643,133.94x = 331,930,829,567.61
  5. Step 5: Solve for x
    x = 331,930,829,567.61/643,133.94
  6. Step 6: Final answer
    x = 516,114.62

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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.