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Finding the Fourth Proportional to 429,789.01, 644,600.13 and 408,452.09

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Solution

The fourth proportional to 429,789.01, 644,600.13 and 408,452.09 is: 612,598.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,789.01 : 644,600.13 = 408,452.09 : x
  2. Step 2: Convert to fraction form
    429,789.01/644,600.13 = 408,452.09/x
  3. Step 3: Cross multiply
    429,789.01x = 644,600.13 × 408,452.09
  4. Step 4: Simplify right side
    429,789.01x = 263,288,270,312.77
  5. Step 5: Solve for x
    x = 263,288,270,312.77/429,789.01
  6. Step 6: Final answer
    x = 612,598.89

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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.