Home / 1,238,490.41-1,857,863.15-428,873.26

Finding the Fourth Proportional to 1,238,490.41, 1,857,863.15 and 428,873.26

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Solution

The fourth proportional to 1,238,490.41, 1,857,863.15 and 428,873.26 is: 643,354.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,490.41 : 1,857,863.15 = 428,873.26 : x
  2. Step 2: Convert to fraction form
    1,238,490.41/1,857,863.15 = 428,873.26/x
  3. Step 3: Cross multiply
    1,238,490.41x = 1,857,863.15 × 428,873.26
  4. Step 4: Simplify right side
    1,238,490.41x = 796,787,825,774.37
  5. Step 5: Solve for x
    x = 796,787,825,774.37/1,238,490.41
  6. Step 6: Final answer
    x = 643,354.05

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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.