Home / 1,319,081.80-1,978,622.70-321,809.80

Finding the Fourth Proportional to 1,319,081.80, 1,978,622.70 and 321,809.80

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Solution

The fourth proportional to 1,319,081.80, 1,978,622.70 and 321,809.80 is: 482,714.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,081.80 : 1,978,622.70 = 321,809.80 : x
  2. Step 2: Convert to fraction form
    1,319,081.80/1,978,622.70 = 321,809.80/x
  3. Step 3: Cross multiply
    1,319,081.80x = 1,978,622.70 × 321,809.80
  4. Step 4: Simplify right side
    1,319,081.80x = 636,740,175,362.46
  5. Step 5: Solve for x
    x = 636,740,175,362.46/1,319,081.80
  6. Step 6: Final answer
    x = 482,714.70

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Similar ratio
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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.