Home / 3,178,344.76-4,386,201.78-1,728,137.56

Finding the Fourth Proportional to 3,178,344.76, 4,386,201.78 and 1,728,137.56

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Solution

The fourth proportional to 3,178,344.76, 4,386,201.78 and 1,728,137.56 is: 2,384,876.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178,344.76 : 4,386,201.78 = 1,728,137.56 : x
  2. Step 2: Convert to fraction form
    3,178,344.76/4,386,201.78 = 1,728,137.56/x
  3. Step 3: Cross multiply
    3,178,344.76x = 4,386,201.78 × 1,728,137.56
  4. Step 4: Simplify right side
    3,178,344.76x = 7,579,960,041,756.86
  5. Step 5: Solve for x
    x = 7,579,960,041,756.86/3,178,344.76
  6. Step 6: Final answer
    x = 2,384,876.60

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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.