Home / 684,741.80-1,025,144.40-419,021.30

Finding the Fourth Proportional to 684,741.80, 1,025,144.40 and 419,021.30

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Solution

The fourth proportional to 684,741.80, 1,025,144.40 and 419,021.30 is: 627,327.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,741.80 : 1,025,144.40 = 419,021.30 : x
  2. Step 2: Convert to fraction form
    684,741.80/1,025,144.40 = 419,021.30/x
  3. Step 3: Cross multiply
    684,741.80x = 1,025,144.40 × 419,021.30
  4. Step 4: Simplify right side
    684,741.80x = 429,557,339,175.72
  5. Step 5: Solve for x
    x = 429,557,339,175.72/684,741.80
  6. Step 6: Final answer
    x = 627,327.47

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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.