Home / 2,138,607.12-2,951,164.92-1,220,799.76

Finding the Fourth Proportional to 2,138,607.12, 2,951,164.92 and 1,220,799.76

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Solution

The fourth proportional to 2,138,607.12, 2,951,164.92 and 1,220,799.76 is: 1,684,639.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138,607.12 : 2,951,164.92 = 1,220,799.76 : x
  2. Step 2: Convert to fraction form
    2,138,607.12/2,951,164.92 = 1,220,799.76/x
  3. Step 3: Cross multiply
    2,138,607.12x = 2,951,164.92 × 1,220,799.76
  4. Step 4: Simplify right side
    2,138,607.12x = 3,602,781,426,056.42
  5. Step 5: Solve for x
    x = 3,602,781,426,056.42/2,138,607.12
  6. Step 6: Final answer
    x = 1,684,639.22

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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.