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Finding the Fourth Proportional to 809,168.60, 1,213,898.70 and 335,901.80

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Solution

The fourth proportional to 809,168.60, 1,213,898.70 and 335,901.80 is: 503,913.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,168.60 : 1,213,898.70 = 335,901.80 : x
  2. Step 2: Convert to fraction form
    809,168.60/1,213,898.70 = 335,901.80/x
  3. Step 3: Cross multiply
    809,168.60x = 1,213,898.70 × 335,901.80
  4. Step 4: Simplify right side
    809,168.60x = 407,750,758,347.66
  5. Step 5: Solve for x
    x = 407,750,758,347.66/809,168.60
  6. Step 6: Final answer
    x = 503,913.22

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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.