Home / 2,138,971.20-3,208,338.72-718,880.64

Finding the Fourth Proportional to 2,138,971.20, 3,208,338.72 and 718,880.64

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Solution

The fourth proportional to 2,138,971.20, 3,208,338.72 and 718,880.64 is: 1,078,281.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138,971.20 : 3,208,338.72 = 718,880.64 : x
  2. Step 2: Convert to fraction form
    2,138,971.20/3,208,338.72 = 718,880.64/x
  3. Step 3: Cross multiply
    2,138,971.20x = 3,208,338.72 × 718,880.64
  4. Step 4: Simplify right side
    2,138,971.20x = 2,306,412,592,370.38
  5. Step 5: Solve for x
    x = 2,306,412,592,370.38/2,138,971.20
  6. Step 6: Final answer
    x = 1,078,281.27

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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.