Home / 809,419.78-1,214,133.35-210,338.52

Finding the Fourth Proportional to 809,419.78, 1,214,133.35 and 210,338.52

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Solution

The fourth proportional to 809,419.78, 1,214,133.35 and 210,338.52 is: 315,508.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,419.78 : 1,214,133.35 = 210,338.52 : x
  2. Step 2: Convert to fraction form
    809,419.78/1,214,133.35 = 210,338.52/x
  3. Step 3: Cross multiply
    809,419.78x = 1,214,133.35 × 210,338.52
  4. Step 4: Simplify right side
    809,419.78x = 255,379,011,921.64
  5. Step 5: Solve for x
    x = 255,379,011,921.64/809,419.78
  6. Step 6: Final answer
    x = 315,508.74

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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.