Home / 1,335,873.21-1,999,079.72-830,672.09

Finding the Fourth Proportional to 1,335,873.21, 1,999,079.72 and 830,672.09

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Solution

The fourth proportional to 1,335,873.21, 1,999,079.72 and 830,672.09 is: 1,243,066.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,335,873.21 : 1,999,079.72 = 830,672.09 : x
  2. Step 2: Convert to fraction form
    1,335,873.21/1,999,079.72 = 830,672.09/x
  3. Step 3: Cross multiply
    1,335,873.21x = 1,999,079.72 × 830,672.09
  4. Step 4: Simplify right side
    1,335,873.21x = 1,660,579,729,933.35
  5. Step 5: Solve for x
    x = 1,660,579,729,933.35/1,335,873.21
  6. Step 6: Final answer
    x = 1,243,066.87

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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.