Home / 812,860.28-1,121,747-445,350.48

Finding the Fourth Proportional to 812,860.28, 1,121,747 and 445,350.48

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Solution

The fourth proportional to 812,860.28, 1,121,747 and 445,350.48 is: 614,583.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,860.28 : 1,121,747 = 445,350.48 : x
  2. Step 2: Convert to fraction form
    812,860.28/1,121,747 = 445,350.48/x
  3. Step 3: Cross multiply
    812,860.28x = 1,121,747 × 445,350.48
  4. Step 4: Simplify right side
    812,860.28x = 499,570,564,888.56
  5. Step 5: Solve for x
    x = 499,570,564,888.56/812,860.28
  6. Step 6: Final answer
    x = 614,583.56

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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.