Home / 1,129,321.78-1,561,529.52-1,111,069.24

Finding the Fourth Proportional to 1,129,321.78, 1,561,529.52 and 1,111,069.24

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Solution

The fourth proportional to 1,129,321.78, 1,561,529.52 and 1,111,069.24 is: 1,536,291.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,321.78 : 1,561,529.52 = 1,111,069.24 : x
  2. Step 2: Convert to fraction form
    1,129,321.78/1,561,529.52 = 1,111,069.24/x
  3. Step 3: Cross multiply
    1,129,321.78x = 1,561,529.52 × 1,111,069.24
  4. Step 4: Simplify right side
    1,129,321.78x = 1,734,967,417,023.97
  5. Step 5: Solve for x
    x = 1,734,967,417,023.97/1,129,321.78
  6. Step 6: Final answer
    x = 1,536,291.47

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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.