Home / 2,138,977.20-3,208,347.72-718,886.64

Finding the Fourth Proportional to 2,138,977.20, 3,208,347.72 and 718,886.64

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Solution

The fourth proportional to 2,138,977.20, 3,208,347.72 and 718,886.64 is: 1,078,290.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138,977.20 : 3,208,347.72 = 718,886.64 : x
  2. Step 2: Convert to fraction form
    2,138,977.20/3,208,347.72 = 718,886.64/x
  3. Step 3: Cross multiply
    2,138,977.20x = 3,208,347.72 × 718,886.64
  4. Step 4: Simplify right side
    2,138,977.20x = 2,306,438,312,382.46
  5. Step 5: Solve for x
    x = 2,306,438,312,382.46/2,138,977.20
  6. Step 6: Final answer
    x = 1,078,290.27

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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.