Home / 1,319,086.80-1,978,630.20-321,814.80

Finding the Fourth Proportional to 1,319,086.80, 1,978,630.20 and 321,814.80

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Solution

The fourth proportional to 1,319,086.80, 1,978,630.20 and 321,814.80 is: 482,722.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,086.80 : 1,978,630.20 = 321,814.80 : x
  2. Step 2: Convert to fraction form
    1,319,086.80/1,978,630.20 = 321,814.80/x
  3. Step 3: Cross multiply
    1,319,086.80x = 1,978,630.20 × 321,814.80
  4. Step 4: Simplify right side
    1,319,086.80x = 636,752,482,086.96
  5. Step 5: Solve for x
    x = 636,752,482,086.96/1,319,086.80
  6. Step 6: Final answer
    x = 482,722.20

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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.