Home / 810,955.20-1,216,933.09-411,882.38

Finding the Fourth Proportional to 810,955.20, 1,216,933.09 and 411,882.38

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Solution

The fourth proportional to 810,955.20, 1,216,933.09 and 411,882.38 is: 618,077.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,955.20 : 1,216,933.09 = 411,882.38 : x
  2. Step 2: Convert to fraction form
    810,955.20/1,216,933.09 = 411,882.38/x
  3. Step 3: Cross multiply
    810,955.20x = 1,216,933.09 × 411,882.38
  4. Step 4: Simplify right side
    810,955.20x = 501,233,294,859.08
  5. Step 5: Solve for x
    x = 501,233,294,859.08/810,955.20
  6. Step 6: Final answer
    x = 618,077.66

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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.