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Finding the Fourth Proportional to 527,231.80, 790,847.70 and 328,166.20

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Solution

The fourth proportional to 527,231.80, 790,847.70 and 328,166.20 is: 492,249.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,231.80 : 790,847.70 = 328,166.20 : x
  2. Step 2: Convert to fraction form
    527,231.80/790,847.70 = 328,166.20/x
  3. Step 3: Cross multiply
    527,231.80x = 790,847.70 × 328,166.20
  4. Step 4: Simplify right side
    527,231.80x = 259,529,484,487.74
  5. Step 5: Solve for x
    x = 259,529,484,487.74/527,231.80
  6. Step 6: Final answer
    x = 492,249.30

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Double scale
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Similar ratio
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1.5x scale

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.