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Finding the Fourth Proportional to 527,579.98, 728,057.90 and 285,862.58

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Solution

The fourth proportional to 527,579.98, 728,057.90 and 285,862.58 is: 394,489.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,579.98 : 728,057.90 = 285,862.58 : x
  2. Step 2: Convert to fraction form
    527,579.98/728,057.90 = 285,862.58/x
  3. Step 3: Cross multiply
    527,579.98x = 728,057.90 × 285,862.58
  4. Step 4: Simplify right side
    527,579.98x = 208,124,509,487.97
  5. Step 5: Solve for x
    x = 208,124,509,487.97/527,579.98
  6. Step 6: Final answer
    x = 394,489.02

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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.