Home / 1,279,482,721.56-1,919,295,874.26-359,287,314.84

Finding the Fourth Proportional to 1,279,482,721.56, 1,919,295,874.26 and 359,287,314.84

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Solution

The fourth proportional to 1,279,482,721.56, 1,919,295,874.26 and 359,287,314.84 is: 538,951,131.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,482,721.56 : 1,919,295,874.26 = 359,287,314.84 : x
  2. Step 2: Convert to fraction form
    1,279,482,721.56/1,919,295,874.26 = 359,287,314.84/x
  3. Step 3: Cross multiply
    1,279,482,721.56x = 1,919,295,874.26 × 359,287,314.84
  4. Step 4: Simplify right side
    1,279,482,721.56x = 689,578,661,046,365,568
  5. Step 5: Solve for x
    x = 689,578,661,046,365,568/1,279,482,721.56
  6. Step 6: Final answer
    x = 538,951,131.91

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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.