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Finding the Fourth Proportional to 808,843.70, 1,213,265.55 and 509,662.10

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Solution

The fourth proportional to 808,843.70, 1,213,265.55 and 509,662.10 is: 764,493.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,843.70 : 1,213,265.55 = 509,662.10 : x
  2. Step 2: Convert to fraction form
    808,843.70/1,213,265.55 = 509,662.10/x
  3. Step 3: Cross multiply
    808,843.70x = 1,213,265.55 × 509,662.10
  4. Step 4: Simplify right side
    808,843.70x = 618,355,468,070.66
  5. Step 5: Solve for x
    x = 618,355,468,070.66/808,843.70
  6. Step 6: Final answer
    x = 764,493.15

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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.