Home / 1,315,720.56-1,815,738.40-806,324.56

Finding the Fourth Proportional to 1,315,720.56, 1,815,738.40 and 806,324.56

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Solution

The fourth proportional to 1,315,720.56, 1,815,738.40 and 806,324.56 is: 1,112,754.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,720.56 : 1,815,738.40 = 806,324.56 : x
  2. Step 2: Convert to fraction form
    1,315,720.56/1,815,738.40 = 806,324.56/x
  3. Step 3: Cross multiply
    1,315,720.56x = 1,815,738.40 × 806,324.56
  4. Step 4: Simplify right side
    1,315,720.56x = 1,464,074,466,455.10
  5. Step 5: Solve for x
    x = 1,464,074,466,455.10/1,315,720.56
  6. Step 6: Final answer
    x = 1,112,754.87

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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.