Home / 1,489,645.40-2,231,843.70-1,221,956.60

Finding the Fourth Proportional to 1,489,645.40, 2,231,843.70 and 1,221,956.60

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Solution

The fourth proportional to 1,489,645.40, 2,231,843.70 and 1,221,956.60 is: 1,830,782.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489,645.40 : 2,231,843.70 = 1,221,956.60 : x
  2. Step 2: Convert to fraction form
    1,489,645.40/2,231,843.70 = 1,221,956.60/x
  3. Step 3: Cross multiply
    1,489,645.40x = 2,231,843.70 × 1,221,956.60
  4. Step 4: Simplify right side
    1,489,645.40x = 2,727,216,139,383.42
  5. Step 5: Solve for x
    x = 2,727,216,139,383.42/1,489,645.40
  6. Step 6: Final answer
    x = 1,830,782.10

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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.