Home / 1,986,069.60-2,979,104.40-1,189,807.20

Finding the Fourth Proportional to 1,986,069.60, 2,979,104.40 and 1,189,807.20

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Solution

The fourth proportional to 1,986,069.60, 2,979,104.40 and 1,189,807.20 is: 1,784,710.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986,069.60 : 2,979,104.40 = 1,189,807.20 : x
  2. Step 2: Convert to fraction form
    1,986,069.60/2,979,104.40 = 1,189,807.20/x
  3. Step 3: Cross multiply
    1,986,069.60x = 2,979,104.40 × 1,189,807.20
  4. Step 4: Simplify right side
    1,986,069.60x = 3,544,559,864,671.68
  5. Step 5: Solve for x
    x = 3,544,559,864,671.68/1,986,069.60
  6. Step 6: Final answer
    x = 1,784,710.80

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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.