Home / 1,385,390.80-2,078,086.20-1,332,246.70

Finding the Fourth Proportional to 1,385,390.80, 2,078,086.20 and 1,332,246.70

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Solution

The fourth proportional to 1,385,390.80, 2,078,086.20 and 1,332,246.70 is: 1,998,370.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,390.80 : 2,078,086.20 = 1,332,246.70 : x
  2. Step 2: Convert to fraction form
    1,385,390.80/2,078,086.20 = 1,332,246.70/x
  3. Step 3: Cross multiply
    1,385,390.80x = 2,078,086.20 × 1,332,246.70
  4. Step 4: Simplify right side
    1,385,390.80x = 2,768,523,482,265.54
  5. Step 5: Solve for x
    x = 2,768,523,482,265.54/1,385,390.80
  6. Step 6: Final answer
    x = 1,998,370.05

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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.