Home / 3,120,123.90-4,680,639.45-1,323,003.90

Finding the Fourth Proportional to 3,120,123.90, 4,680,639.45 and 1,323,003.90

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Solution

The fourth proportional to 3,120,123.90, 4,680,639.45 and 1,323,003.90 is: 1,984,698.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120,123.90 : 4,680,639.45 = 1,323,003.90 : x
  2. Step 2: Convert to fraction form
    3,120,123.90/4,680,639.45 = 1,323,003.90/x
  3. Step 3: Cross multiply
    3,120,123.90x = 4,680,639.45 × 1,323,003.90
  4. Step 4: Simplify right side
    3,120,123.90x = 6,192,504,246,843.86
  5. Step 5: Solve for x
    x = 6,192,504,246,843.86/3,120,123.90
  6. Step 6: Final answer
    x = 1,984,698.19

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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.