Home / 1,217,720.48-1,681,129.92-734,408.56

Finding the Fourth Proportional to 1,217,720.48, 1,681,129.92 and 734,408.56

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Solution

The fourth proportional to 1,217,720.48, 1,681,129.92 and 734,408.56 is: 1,013,891.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,720.48 : 1,681,129.92 = 734,408.56 : x
  2. Step 2: Convert to fraction form
    1,217,720.48/1,681,129.92 = 734,408.56/x
  3. Step 3: Cross multiply
    1,217,720.48x = 1,681,129.92 × 734,408.56
  4. Step 4: Simplify right side
    1,217,720.48x = 1,234,636,203,720.12
  5. Step 5: Solve for x
    x = 1,234,636,203,720.12/1,217,720.48
  6. Step 6: Final answer
    x = 1,013,891.30

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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.