Home / 1,218,420.38-1,827,910.85-408,912.22

Finding the Fourth Proportional to 1,218,420.38, 1,827,910.85 and 408,912.22

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Solution

The fourth proportional to 1,218,420.38, 1,827,910.85 and 408,912.22 is: 613,462.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,420.38 : 1,827,910.85 = 408,912.22 : x
  2. Step 2: Convert to fraction form
    1,218,420.38/1,827,910.85 = 408,912.22/x
  3. Step 3: Cross multiply
    1,218,420.38x = 1,827,910.85 × 408,912.22
  4. Step 4: Simplify right side
    1,218,420.38x = 747,455,091,317.05
  5. Step 5: Solve for x
    x = 747,455,091,317.05/1,218,420.38
  6. Step 6: Final answer
    x = 613,462.40

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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.