Home / 3,178,842.11-4,386,824.93-1,728,527.15

Finding the Fourth Proportional to 3,178,842.11, 4,386,824.93 and 1,728,527.15

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Solution

The fourth proportional to 3,178,842.11, 4,386,824.93 and 1,728,527.15 is: 2,385,379.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178,842.11 : 4,386,824.93 = 1,728,527.15 : x
  2. Step 2: Convert to fraction form
    3,178,842.11/4,386,824.93 = 1,728,527.15/x
  3. Step 3: Cross multiply
    3,178,842.11x = 4,386,824.93 × 1,728,527.15
  4. Step 4: Simplify right side
    3,178,842.11x = 7,582,745,993,801.85
  5. Step 5: Solve for x
    x = 7,582,745,993,801.85/3,178,842.11
  6. Step 6: Final answer
    x = 2,385,379.87

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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.