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Finding the Fourth Proportional to 432,998.60, 649,497.90 and 328,022.60

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Solution

The fourth proportional to 432,998.60, 649,497.90 and 328,022.60 is: 492,033.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,998.60 : 649,497.90 = 328,022.60 : x
  2. Step 2: Convert to fraction form
    432,998.60/649,497.90 = 328,022.60/x
  3. Step 3: Cross multiply
    432,998.60x = 649,497.90 × 328,022.60
  4. Step 4: Simplify right side
    432,998.60x = 213,049,989,852.54
  5. Step 5: Solve for x
    x = 213,049,989,852.54/432,998.60
  6. Step 6: Final answer
    x = 492,033.90

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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.