Home / 2,719,112.20-4,078,538.70-921,819.40

Finding the Fourth Proportional to 2,719,112.20, 4,078,538.70 and 921,819.40

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Solution

The fourth proportional to 2,719,112.20, 4,078,538.70 and 921,819.40 is: 1,382,685.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,719,112.20 : 4,078,538.70 = 921,819.40 : x
  2. Step 2: Convert to fraction form
    2,719,112.20/4,078,538.70 = 921,819.40/x
  3. Step 3: Cross multiply
    2,719,112.20x = 4,078,538.70 × 921,819.40
  4. Step 4: Simplify right side
    2,719,112.20x = 3,759,676,097,310.78
  5. Step 5: Solve for x
    x = 3,759,676,097,310.78/2,719,112.20
  6. Step 6: Final answer
    x = 1,382,685.16

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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.