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Finding the Fourth Proportional to 426,954.18, 640,536.36 and 300,840.72

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Solution

The fourth proportional to 426,954.18, 640,536.36 and 300,840.72 is: 451,335.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,954.18 : 640,536.36 = 300,840.72 : x
  2. Step 2: Convert to fraction form
    426,954.18/640,536.36 = 300,840.72/x
  3. Step 3: Cross multiply
    426,954.18x = 640,536.36 × 300,840.72
  4. Step 4: Simplify right side
    426,954.18x = 192,699,419,728.58
  5. Step 5: Solve for x
    x = 192,699,419,728.58/426,954.18
  6. Step 6: Final answer
    x = 451,335.13

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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.