Home / 429,786.68-644,679.28-114,243.60

Finding the Fourth Proportional to 429,786.68, 644,679.28 and 114,243.60

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Solution

The fourth proportional to 429,786.68, 644,679.28 and 114,243.60 is: 171,365.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,786.68 : 644,679.28 = 114,243.60 : x
  2. Step 2: Convert to fraction form
    429,786.68/644,679.28 = 114,243.60/x
  3. Step 3: Cross multiply
    429,786.68x = 644,679.28 × 114,243.60
  4. Step 4: Simplify right side
    429,786.68x = 73,650,481,792.61
  5. Step 5: Solve for x
    x = 73,650,481,792.61/429,786.68
  6. Step 6: Final answer
    x = 171,365.20

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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.