Home / 1,238,718.88-1,857,632.08-428,883.36

Finding the Fourth Proportional to 1,238,718.88, 1,857,632.08 and 428,883.36

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Solution

The fourth proportional to 1,238,718.88, 1,857,632.08 and 428,883.36 is: 643,170.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,718.88 : 1,857,632.08 = 428,883.36 : x
  2. Step 2: Convert to fraction form
    1,238,718.88/1,857,632.08 = 428,883.36/x
  3. Step 3: Cross multiply
    1,238,718.88x = 1,857,632.08 × 428,883.36
  4. Step 4: Simplify right side
    1,238,718.88x = 796,707,488,114.19
  5. Step 5: Solve for x
    x = 796,707,488,114.19/1,238,718.88
  6. Step 6: Final answer
    x = 643,170.54

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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.