Home / 808,217.40-1,212,471.90-407,850.60

Finding the Fourth Proportional to 808,217.40, 1,212,471.90 and 407,850.60

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Solution

The fourth proportional to 808,217.40, 1,212,471.90 and 407,850.60 is: 611,849.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,217.40 : 1,212,471.90 = 407,850.60 : x
  2. Step 2: Convert to fraction form
    808,217.40/1,212,471.90 = 407,850.60/x
  3. Step 3: Cross multiply
    808,217.40x = 1,212,471.90 × 407,850.60
  4. Step 4: Simplify right side
    808,217.40x = 494,507,391,898.14
  5. Step 5: Solve for x
    x = 494,507,391,898.14/808,217.40
  6. Step 6: Final answer
    x = 611,849.48

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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.