Home / 1,288,865.05-1,930,352.63-615,418.04

Finding the Fourth Proportional to 1,288,865.05, 1,930,352.63 and 615,418.04

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Solution

The fourth proportional to 1,288,865.05, 1,930,352.63 and 615,418.04 is: 921,720.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,865.05 : 1,930,352.63 = 615,418.04 : x
  2. Step 2: Convert to fraction form
    1,288,865.05/1,930,352.63 = 615,418.04/x
  3. Step 3: Cross multiply
    1,288,865.05x = 1,930,352.63 × 615,418.04
  4. Step 4: Simplify right side
    1,288,865.05x = 1,187,973,832,063.45
  5. Step 5: Solve for x
    x = 1,187,973,832,063.45/1,288,865.05
  6. Step 6: Final answer
    x = 921,720.88

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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.