Home / 1,238,240.75-1,857,361.52-817,418.21

Finding the Fourth Proportional to 1,238,240.75, 1,857,361.52 and 817,418.21

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Solution

The fourth proportional to 1,238,240.75, 1,857,361.52 and 817,418.21 is: 1,226,127.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,240.75 : 1,857,361.52 = 817,418.21 : x
  2. Step 2: Convert to fraction form
    1,238,240.75/1,857,361.52 = 817,418.21/x
  3. Step 3: Cross multiply
    1,238,240.75x = 1,857,361.52 × 817,418.21
  4. Step 4: Simplify right side
    1,238,240.75x = 1,518,241,121,758.02
  5. Step 5: Solve for x
    x = 1,518,241,121,758.02/1,238,240.75
  6. Step 6: Final answer
    x = 1,226,127.57

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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.