Home / 1,787,078.20-2,680,310.10-664,569.40

Finding the Fourth Proportional to 1,787,078.20, 2,680,310.10 and 664,569.40

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Solution

The fourth proportional to 1,787,078.20, 2,680,310.10 and 664,569.40 is: 996,739.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787,078.20 : 2,680,310.10 = 664,569.40 : x
  2. Step 2: Convert to fraction form
    1,787,078.20/2,680,310.10 = 664,569.40/x
  3. Step 3: Cross multiply
    1,787,078.20x = 2,680,310.10 × 664,569.40
  4. Step 4: Simplify right side
    1,787,078.20x = 1,781,252,074,970.94
  5. Step 5: Solve for x
    x = 1,781,252,074,970.94/1,787,078.20
  6. Step 6: Final answer
    x = 996,739.86

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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.