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Finding the Fourth Proportional to 540,311.50, 745,644.75 and 298,609.73

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Solution

The fourth proportional to 540,311.50, 745,644.75 and 298,609.73 is: 412,089.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,311.50 : 745,644.75 = 298,609.73 : x
  2. Step 2: Convert to fraction form
    540,311.50/745,644.75 = 298,609.73/x
  3. Step 3: Cross multiply
    540,311.50x = 745,644.75 × 298,609.73
  4. Step 4: Simplify right side
    540,311.50x = 222,656,777,473.42
  5. Step 5: Solve for x
    x = 222,656,777,473.42/540,311.50
  6. Step 6: Final answer
    x = 412,089.65

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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.