Home / 2,661,187.60-3,990,906.60-978,072.40

Finding the Fourth Proportional to 2,661,187.60, 3,990,906.60 and 978,072.40

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Solution

The fourth proportional to 2,661,187.60, 3,990,906.60 and 978,072.40 is: 1,466,787.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,661,187.60 : 3,990,906.60 = 978,072.40 : x
  2. Step 2: Convert to fraction form
    2,661,187.60/3,990,906.60 = 978,072.40/x
  3. Step 3: Cross multiply
    2,661,187.60x = 3,990,906.60 × 978,072.40
  4. Step 4: Simplify right side
    2,661,187.60x = 3,903,395,596,437.84
  5. Step 5: Solve for x
    x = 3,903,395,596,437.84/2,661,187.60
  6. Step 6: Final answer
    x = 1,466,787.08

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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.