Home / 812,653.78-1,217,859.66-612,754.49

Finding the Fourth Proportional to 812,653.78, 1,217,859.66 and 612,754.49

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Solution

The fourth proportional to 812,653.78, 1,217,859.66 and 612,754.49 is: 918,286.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,653.78 : 1,217,859.66 = 612,754.49 : x
  2. Step 2: Convert to fraction form
    812,653.78/1,217,859.66 = 612,754.49/x
  3. Step 3: Cross multiply
    812,653.78x = 1,217,859.66 × 612,754.49
  4. Step 4: Simplify right side
    812,653.78x = 746,248,968,765.58
  5. Step 5: Solve for x
    x = 746,248,968,765.58/812,653.78
  6. Step 6: Final answer
    x = 918,286.47

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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.