Home / 3,178,680.85-4,386,549-1,728,376.84

Finding the Fourth Proportional to 3,178,680.85, 4,386,549 and 1,728,376.84

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Solution

The fourth proportional to 3,178,680.85, 4,386,549 and 1,728,376.84 is: 2,385,143.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178,680.85 : 4,386,549 = 1,728,376.84 : x
  2. Step 2: Convert to fraction form
    3,178,680.85/4,386,549 = 1,728,376.84/x
  3. Step 3: Cross multiply
    3,178,680.85x = 4,386,549 × 1,728,376.84
  4. Step 4: Simplify right side
    3,178,680.85x = 7,581,609,699,125.16
  5. Step 5: Solve for x
    x = 7,581,609,699,125.16/3,178,680.85
  6. Step 6: Final answer
    x = 2,385,143.42

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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.