Home / 812,215.74-1,216,991.94-575,132.82

Finding the Fourth Proportional to 812,215.74, 1,216,991.94 and 575,132.82

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Solution

The fourth proportional to 812,215.74, 1,216,991.94 and 575,132.82 is: 861,756.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,215.74 : 1,216,991.94 = 575,132.82 : x
  2. Step 2: Convert to fraction form
    812,215.74/1,216,991.94 = 575,132.82/x
  3. Step 3: Cross multiply
    812,215.74x = 1,216,991.94 × 575,132.82
  4. Step 4: Simplify right side
    812,215.74x = 699,932,006,369.47
  5. Step 5: Solve for x
    x = 699,932,006,369.47/812,215.74
  6. Step 6: Final answer
    x = 861,756.27

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1.5x scale

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.