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Finding the Fourth Proportional to 527,571.52, 728,049.60 and 285,854.08

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Solution

The fourth proportional to 527,571.52, 728,049.60 and 285,854.08 is: 394,479.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,571.52 : 728,049.60 = 285,854.08 : x
  2. Step 2: Convert to fraction form
    527,571.52/728,049.60 = 285,854.08/x
  3. Step 3: Cross multiply
    527,571.52x = 728,049.60 × 285,854.08
  4. Step 4: Simplify right side
    527,571.52x = 208,115,948,602.37
  5. Step 5: Solve for x
    x = 208,115,948,602.37/527,571.52
  6. Step 6: Final answer
    x = 394,479.12

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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.