Home / 3,178,756.80-4,386,622.32-1,728,439.56

Finding the Fourth Proportional to 3,178,756.80, 4,386,622.32 and 1,728,439.56

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Solution

The fourth proportional to 3,178,756.80, 4,386,622.32 and 1,728,439.56 is: 2,385,212.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178,756.80 : 4,386,622.32 = 1,728,439.56 : x
  2. Step 2: Convert to fraction form
    3,178,756.80/4,386,622.32 = 1,728,439.56/x
  3. Step 3: Cross multiply
    3,178,756.80x = 4,386,622.32 × 1,728,439.56
  4. Step 4: Simplify right side
    3,178,756.80x = 7,582,011,552,666.98
  5. Step 5: Solve for x
    x = 7,582,011,552,666.98/3,178,756.80
  6. Step 6: Final answer
    x = 2,385,212.85

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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.