Home / 808,505.20-1,212,587.70-408,770.20

Finding the Fourth Proportional to 808,505.20, 1,212,587.70 and 408,770.20

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Solution

The fourth proportional to 808,505.20, 1,212,587.70 and 408,770.20 is: 613,069.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,505.20 : 1,212,587.70 = 408,770.20 : x
  2. Step 2: Convert to fraction form
    808,505.20/1,212,587.70 = 408,770.20/x
  3. Step 3: Cross multiply
    808,505.20x = 1,212,587.70 × 408,770.20
  4. Step 4: Simplify right side
    808,505.20x = 495,669,716,646.54
  5. Step 5: Solve for x
    x = 495,669,716,646.54/808,505.20
  6. Step 6: Final answer
    x = 613,069.30

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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.