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Finding the Fourth Proportional to 389,611.20, 584,416.80 and 336,467.10

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Solution

The fourth proportional to 389,611.20, 584,416.80 and 336,467.10 is: 504,700.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,611.20 : 584,416.80 = 336,467.10 : x
  2. Step 2: Convert to fraction form
    389,611.20/584,416.80 = 336,467.10/x
  3. Step 3: Cross multiply
    389,611.20x = 584,416.80 × 336,467.10
  4. Step 4: Simplify right side
    389,611.20x = 196,637,025,887.28
  5. Step 5: Solve for x
    x = 196,637,025,887.28/389,611.20
  6. Step 6: Final answer
    x = 504,700.65

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Similar ratio
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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.