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Finding the Fourth Proportional to 429,575.40, 644,363.10 and 361,146.60

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Solution

The fourth proportional to 429,575.40, 644,363.10 and 361,146.60 is: 541,719.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,575.40 : 644,363.10 = 361,146.60 : x
  2. Step 2: Convert to fraction form
    429,575.40/644,363.10 = 361,146.60/x
  3. Step 3: Cross multiply
    429,575.40x = 644,363.10 × 361,146.60
  4. Step 4: Simplify right side
    429,575.40x = 232,709,542,730.46
  5. Step 5: Solve for x
    x = 232,709,542,730.46/429,575.40
  6. Step 6: Final answer
    x = 541,719.90

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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.