Home / 2,138,795.28-2,951,425.08-1,220,988.24

Finding the Fourth Proportional to 2,138,795.28, 2,951,425.08 and 1,220,988.24

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Solution

The fourth proportional to 2,138,795.28, 2,951,425.08 and 1,220,988.24 is: 1,684,899.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138,795.28 : 2,951,425.08 = 1,220,988.24 : x
  2. Step 2: Convert to fraction form
    2,138,795.28/2,951,425.08 = 1,220,988.24/x
  3. Step 3: Cross multiply
    2,138,795.28x = 2,951,425.08 × 1,220,988.24
  4. Step 4: Simplify right side
    2,138,795.28x = 3,603,655,313,921.06
  5. Step 5: Solve for x
    x = 3,603,655,313,921.06/2,138,795.28
  6. Step 6: Final answer
    x = 1,684,899.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.