Home / 811,919.20-1,217,878.80-788,591.20

Finding the Fourth Proportional to 811,919.20, 1,217,878.80 and 788,591.20

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Solution

The fourth proportional to 811,919.20, 1,217,878.80 and 788,591.20 is: 1,182,886.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,919.20 : 1,217,878.80 = 788,591.20 : x
  2. Step 2: Convert to fraction form
    811,919.20/1,217,878.80 = 788,591.20/x
  3. Step 3: Cross multiply
    811,919.20x = 1,217,878.80 × 788,591.20
  4. Step 4: Simplify right side
    811,919.20x = 960,408,504,346.56
  5. Step 5: Solve for x
    x = 960,408,504,346.56/811,919.20
  6. Step 6: Final answer
    x = 1,182,886.80

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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.