Home / 420,976.56-628,393.84-367,831.92

Finding the Fourth Proportional to 420,976.56, 628,393.84 and 367,831.92

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Solution

The fourth proportional to 420,976.56, 628,393.84 and 367,831.92 is: 549,064.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,976.56 : 628,393.84 = 367,831.92 : x
  2. Step 2: Convert to fraction form
    420,976.56/628,393.84 = 367,831.92/x
  3. Step 3: Cross multiply
    420,976.56x = 628,393.84 × 367,831.92
  4. Step 4: Simplify right side
    420,976.56x = 231,143,312,683.37
  5. Step 5: Solve for x
    x = 231,143,312,683.37/420,976.56
  6. Step 6: Final answer
    x = 549,064.57

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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.