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Finding the Fourth Proportional to 429,778.72, 644,011.44 and 180,324.64

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Solution

The fourth proportional to 429,778.72, 644,011.44 and 180,324.64 is: 270,211.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,778.72 : 644,011.44 = 180,324.64 : x
  2. Step 2: Convert to fraction form
    429,778.72/644,011.44 = 180,324.64/x
  3. Step 3: Cross multiply
    429,778.72x = 644,011.44 × 180,324.64
  4. Step 4: Simplify right side
    429,778.72x = 116,131,131,073.88
  5. Step 5: Solve for x
    x = 116,131,131,073.88/429,778.72
  6. Step 6: Final answer
    x = 270,211.45

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1.5x scale

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.