Home / 394,869.15-592,303.26-128,629.24

Finding the Fourth Proportional to 394,869.15, 592,303.26 and 128,629.24

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Solution

The fourth proportional to 394,869.15, 592,303.26 and 128,629.24 is: 192,943.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,869.15 : 592,303.26 = 128,629.24 : x
  2. Step 2: Convert to fraction form
    394,869.15/592,303.26 = 128,629.24/x
  3. Step 3: Cross multiply
    394,869.15x = 592,303.26 × 128,629.24
  4. Step 4: Simplify right side
    394,869.15x = 76,187,518,183.32
  5. Step 5: Solve for x
    x = 76,187,518,183.32/394,869.15
  6. Step 6: Final answer
    x = 192,943.71

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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.