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Finding the Fourth Proportional to 527,716.35, 728,240.40 and 285,996.87

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Solution

The fourth proportional to 527,716.35, 728,240.40 and 285,996.87 is: 394,671.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,716.35 : 728,240.40 = 285,996.87 : x
  2. Step 2: Convert to fraction form
    527,716.35/728,240.40 = 285,996.87/x
  3. Step 3: Cross multiply
    527,716.35x = 728,240.40 × 285,996.87
  4. Step 4: Simplify right side
    527,716.35x = 208,274,475,007.55
  5. Step 5: Solve for x
    x = 208,274,475,007.55/527,716.35
  6. Step 6: Final answer
    x = 394,671.26

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1.5x scale

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.