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Finding the Fourth Proportional to 663,912.60, 994,556.70 and 363,856.20

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Solution

The fourth proportional to 663,912.60, 994,556.70 and 363,856.20 is: 545,065.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,912.60 : 994,556.70 = 363,856.20 : x
  2. Step 2: Convert to fraction form
    663,912.60/994,556.70 = 363,856.20/x
  3. Step 3: Cross multiply
    663,912.60x = 994,556.70 × 363,856.20
  4. Step 4: Simplify right side
    663,912.60x = 361,875,621,546.54
  5. Step 5: Solve for x
    x = 361,875,621,546.54/663,912.60
  6. Step 6: Final answer
    x = 545,065.15

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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.