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Finding the Fourth Proportional to 527,940.35, 728,548.18 and 298,493.68

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Solution

The fourth proportional to 527,940.35, 728,548.18 and 298,493.68 is: 411,915.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,940.35 : 728,548.18 = 298,493.68 : x
  2. Step 2: Convert to fraction form
    527,940.35/728,548.18 = 298,493.68/x
  3. Step 3: Cross multiply
    527,940.35x = 728,548.18 × 298,493.68
  4. Step 4: Simplify right side
    527,940.35x = 217,467,027,305.50
  5. Step 5: Solve for x
    x = 217,467,027,305.50/527,940.35
  6. Step 6: Final answer
    x = 411,915.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.