Home / 808,620.30-1,212,930.45-209,576.70

Finding the Fourth Proportional to 808,620.30, 1,212,930.45 and 209,576.70

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Solution

The fourth proportional to 808,620.30, 1,212,930.45 and 209,576.70 is: 314,365.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,620.30 : 1,212,930.45 = 209,576.70 : x
  2. Step 2: Convert to fraction form
    808,620.30/1,212,930.45 = 209,576.70/x
  3. Step 3: Cross multiply
    808,620.30x = 1,212,930.45 × 209,576.70
  4. Step 4: Simplify right side
    808,620.30x = 254,201,961,040.52
  5. Step 5: Solve for x
    x = 254,201,961,040.52/808,620.30
  6. Step 6: Final answer
    x = 314,365.05

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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.