Home / 5,128,728.74-7,692,879.26-1,342,127.78

Finding the Fourth Proportional to 5,128,728.74, 7,692,879.26 and 1,342,127.78

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Solution

The fourth proportional to 5,128,728.74, 7,692,879.26 and 1,342,127.78 is: 2,013,135.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128,728.74 : 7,692,879.26 = 1,342,127.78 : x
  2. Step 2: Convert to fraction form
    5,128,728.74/7,692,879.26 = 1,342,127.78/x
  3. Step 3: Cross multiply
    5,128,728.74x = 7,692,879.26 × 1,342,127.78
  4. Step 4: Simplify right side
    5,128,728.74x = 10,324,826,963,031.84
  5. Step 5: Solve for x
    x = 10,324,826,963,031.84/5,128,728.74
  6. Step 6: Final answer
    x = 2,013,135.71

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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.