Home / 815,810.82-1,125,979.92-521,272.14

Finding the Fourth Proportional to 815,810.82, 1,125,979.92 and 521,272.14

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Solution

The fourth proportional to 815,810.82, 1,125,979.92 and 521,272.14 is: 719,458.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,810.82 : 1,125,979.92 = 521,272.14 : x
  2. Step 2: Convert to fraction form
    815,810.82/1,125,979.92 = 521,272.14/x
  3. Step 3: Cross multiply
    815,810.82x = 1,125,979.92 × 521,272.14
  4. Step 4: Simplify right side
    815,810.82x = 586,941,962,495.43
  5. Step 5: Solve for x
    x = 586,941,962,495.43/815,810.82
  6. Step 6: Final answer
    x = 719,458.42

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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.