Home / 807,849.60-1,211,774.40-386,908.80

Finding the Fourth Proportional to 807,849.60, 1,211,774.40 and 386,908.80

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Solution

The fourth proportional to 807,849.60, 1,211,774.40 and 386,908.80 is: 580,363.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,849.60 : 1,211,774.40 = 386,908.80 : x
  2. Step 2: Convert to fraction form
    807,849.60/1,211,774.40 = 386,908.80/x
  3. Step 3: Cross multiply
    807,849.60x = 1,211,774.40 × 386,908.80
  4. Step 4: Simplify right side
    807,849.60x = 468,846,178,974.72
  5. Step 5: Solve for x
    x = 468,846,178,974.72/807,849.60
  6. Step 6: Final answer
    x = 580,363.20

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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.