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Finding the Fourth Proportional to 809,315.80, 1,214,459.70 and 335,951.80

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Solution

The fourth proportional to 809,315.80, 1,214,459.70 and 335,951.80 is: 504,129.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,315.80 : 1,214,459.70 = 335,951.80 : x
  2. Step 2: Convert to fraction form
    809,315.80/1,214,459.70 = 335,951.80/x
  3. Step 3: Cross multiply
    809,315.80x = 1,214,459.70 × 335,951.80
  4. Step 4: Simplify right side
    809,315.80x = 407,999,922,242.46
  5. Step 5: Solve for x
    x = 407,999,922,242.46/809,315.80
  6. Step 6: Final answer
    x = 504,129.44

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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.