Home / 429,619.52-644,429.17-109,771.98

Finding the Fourth Proportional to 429,619.52, 644,429.17 and 109,771.98

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Solution

The fourth proportional to 429,619.52, 644,429.17 and 109,771.98 is: 164,657.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,619.52 : 644,429.17 = 109,771.98 : x
  2. Step 2: Convert to fraction form
    429,619.52/644,429.17 = 109,771.98/x
  3. Step 3: Cross multiply
    429,619.52x = 644,429.17 × 109,771.98
  4. Step 4: Simplify right side
    429,619.52x = 70,740,265,960.66
  5. Step 5: Solve for x
    x = 70,740,265,960.66/429,619.52
  6. Step 6: Final answer
    x = 164,657.94

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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.