Home / 876,174.31-1,209,136.31-513,859.56

Finding the Fourth Proportional to 876,174.31, 1,209,136.31 and 513,859.56

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Solution

The fourth proportional to 876,174.31, 1,209,136.31 and 513,859.56 is: 709,135.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,174.31 : 1,209,136.31 = 513,859.56 : x
  2. Step 2: Convert to fraction form
    876,174.31/1,209,136.31 = 513,859.56/x
  3. Step 3: Cross multiply
    876,174.31x = 1,209,136.31 × 513,859.56
  4. Step 4: Simplify right side
    876,174.31x = 621,326,252,236.62
  5. Step 5: Solve for x
    x = 621,326,252,236.62/876,174.31
  6. Step 6: Final answer
    x = 709,135.44

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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.