Home / 1,277,138.82-1,913,540.33-770,635.47

Finding the Fourth Proportional to 1,277,138.82, 1,913,540.33 and 770,635.47

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Solution

The fourth proportional to 1,277,138.82, 1,913,540.33 and 770,635.47 is: 1,154,645.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277,138.82 : 1,913,540.33 = 770,635.47 : x
  2. Step 2: Convert to fraction form
    1,277,138.82/1,913,540.33 = 770,635.47/x
  3. Step 3: Cross multiply
    1,277,138.82x = 1,913,540.33 × 770,635.47
  4. Step 4: Simplify right side
    1,277,138.82x = 1,474,642,047,744.79
  5. Step 5: Solve for x
    x = 1,474,642,047,744.79/1,277,138.82
  6. Step 6: Final answer
    x = 1,154,645.07

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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.