Home / 808,501.20-1,212,581.70-408,766.20

Finding the Fourth Proportional to 808,501.20, 1,212,581.70 and 408,766.20

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Solution

The fourth proportional to 808,501.20, 1,212,581.70 and 408,766.20 is: 613,063.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,501.20 : 1,212,581.70 = 408,766.20 : x
  2. Step 2: Convert to fraction form
    808,501.20/1,212,581.70 = 408,766.20/x
  3. Step 3: Cross multiply
    808,501.20x = 1,212,581.70 × 408,766.20
  4. Step 4: Simplify right side
    808,501.20x = 495,662,413,698.54
  5. Step 5: Solve for x
    x = 495,662,413,698.54/808,501.20
  6. Step 6: Final answer
    x = 613,063.30

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1.5x scale

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.