Home / 7,191,290.72-9,923,601.78-3,928,058.46

Finding the Fourth Proportional to 7,191,290.72, 9,923,601.78 and 3,928,058.46

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Solution

The fourth proportional to 7,191,290.72, 9,923,601.78 and 3,928,058.46 is: 5,420,513.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,191,290.72 : 9,923,601.78 = 3,928,058.46 : x
  2. Step 2: Convert to fraction form
    7,191,290.72/9,923,601.78 = 3,928,058.46/x
  3. Step 3: Cross multiply
    7,191,290.72x = 9,923,601.78 × 3,928,058.46
  4. Step 4: Simplify right side
    7,191,290.72x = 38,980,487,925,600.05
  5. Step 5: Solve for x
    x = 38,980,487,925,600.05/7,191,290.72
  6. Step 6: Final answer
    x = 5,420,513.43

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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.