Home / 808,507.20-1,212,590.70-408,772.20

Finding the Fourth Proportional to 808,507.20, 1,212,590.70 and 408,772.20

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Solution

The fourth proportional to 808,507.20, 1,212,590.70 and 408,772.20 is: 613,072.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,507.20 : 1,212,590.70 = 408,772.20 : x
  2. Step 2: Convert to fraction form
    808,507.20/1,212,590.70 = 408,772.20/x
  3. Step 3: Cross multiply
    808,507.20x = 1,212,590.70 × 408,772.20
  4. Step 4: Simplify right side
    808,507.20x = 495,673,368,138.54
  5. Step 5: Solve for x
    x = 495,673,368,138.54/808,507.20
  6. Step 6: Final answer
    x = 613,072.30

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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.