Home / 419,120.07-625,637.27-387,896.19

Finding the Fourth Proportional to 419,120.07, 625,637.27 and 387,896.19

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Solution

The fourth proportional to 419,120.07, 625,637.27 and 387,896.19 is: 579,028.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,120.07 : 625,637.27 = 387,896.19 : x
  2. Step 2: Convert to fraction form
    419,120.07/625,637.27 = 387,896.19/x
  3. Step 3: Cross multiply
    419,120.07x = 625,637.27 × 387,896.19
  4. Step 4: Simplify right side
    419,120.07x = 242,682,311,415.52
  5. Step 5: Solve for x
    x = 242,682,311,415.52/419,120.07
  6. Step 6: Final answer
    x = 579,028.13

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.