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Finding the Fourth Proportional to 408,911.10, 613,366.65 and 323,618.10

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Solution

The fourth proportional to 408,911.10, 613,366.65 and 323,618.10 is: 485,427.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,911.10 : 613,366.65 = 323,618.10 : x
  2. Step 2: Convert to fraction form
    408,911.10/613,366.65 = 323,618.10/x
  3. Step 3: Cross multiply
    408,911.10x = 613,366.65 × 323,618.10
  4. Step 4: Simplify right side
    408,911.10x = 198,496,549,876.37
  5. Step 5: Solve for x
    x = 198,496,549,876.37/408,911.10
  6. Step 6: Final answer
    x = 485,427.15

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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.