Home / 5,178,908.34-7,147,318.91-2,856,255.21

Finding the Fourth Proportional to 5,178,908.34, 7,147,318.91 and 2,856,255.21

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Solution

The fourth proportional to 5,178,908.34, 7,147,318.91 and 2,856,255.21 is: 3,941,866.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178,908.34 : 7,147,318.91 = 2,856,255.21 : x
  2. Step 2: Convert to fraction form
    5,178,908.34/7,147,318.91 = 2,856,255.21/x
  3. Step 3: Cross multiply
    5,178,908.34x = 7,147,318.91 × 2,856,255.21
  4. Step 4: Simplify right side
    5,178,908.34x = 20,414,566,859,937.75
  5. Step 5: Solve for x
    x = 20,414,566,859,937.75/5,178,908.34
  6. Step 6: Final answer
    x = 3,941,866.80

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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.