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Finding the Fourth Proportional to 808,614.60, 1,210,589.10 and 785,286.60

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Solution

The fourth proportional to 808,614.60, 1,210,589.10 and 785,286.60 is: 1,175,664.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,614.60 : 1,210,589.10 = 785,286.60 : x
  2. Step 2: Convert to fraction form
    808,614.60/1,210,589.10 = 785,286.60/x
  3. Step 3: Cross multiply
    808,614.60x = 1,210,589.10 × 785,286.60
  4. Step 4: Simplify right side
    808,614.60x = 950,659,398,336.06
  5. Step 5: Solve for x
    x = 950,659,398,336.06/808,614.60
  6. Step 6: Final answer
    x = 1,175,664.40

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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.