Home / 810,907.49-1,215,180.24-389,691.29

Finding the Fourth Proportional to 810,907.49, 1,215,180.24 and 389,691.29

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Solution

The fourth proportional to 810,907.49, 1,215,180.24 and 389,691.29 is: 583,969.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,907.49 : 1,215,180.24 = 389,691.29 : x
  2. Step 2: Convert to fraction form
    810,907.49/1,215,180.24 = 389,691.29/x
  3. Step 3: Cross multiply
    810,907.49x = 1,215,180.24 × 389,691.29
  4. Step 4: Simplify right side
    810,907.49x = 473,545,149,232.21
  5. Step 5: Solve for x
    x = 473,545,149,232.21/810,907.49
  6. Step 6: Final answer
    x = 583,969.39

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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.