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Finding the Fourth Proportional to 809,215.80, 1,214,309.70 and 335,851.80

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Solution

The fourth proportional to 809,215.80, 1,214,309.70 and 335,851.80 is: 503,979.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,215.80 : 1,214,309.70 = 335,851.80 : x
  2. Step 2: Convert to fraction form
    809,215.80/1,214,309.70 = 335,851.80/x
  3. Step 3: Cross multiply
    809,215.80x = 1,214,309.70 × 335,851.80
  4. Step 4: Simplify right side
    809,215.80x = 407,828,098,502.46
  5. Step 5: Solve for x
    x = 407,828,098,502.46/809,215.80
  6. Step 6: Final answer
    x = 503,979.41

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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.