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Finding the Fourth Proportional to 418,831.60, 628,247.40 and 335,887.60

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Solution

The fourth proportional to 418,831.60, 628,247.40 and 335,887.60 is: 503,831.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,831.60 : 628,247.40 = 335,887.60 : x
  2. Step 2: Convert to fraction form
    418,831.60/628,247.40 = 335,887.60/x
  3. Step 3: Cross multiply
    418,831.60x = 628,247.40 × 335,887.60
  4. Step 4: Simplify right side
    418,831.60x = 211,020,511,392.24
  5. Step 5: Solve for x
    x = 211,020,511,392.24/418,831.60
  6. Step 6: Final answer
    x = 503,831.40

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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.