Home / 809,161.70-1,212,727.63-429,144.48

Finding the Fourth Proportional to 809,161.70, 1,212,727.63 and 429,144.48

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Solution

The fourth proportional to 809,161.70, 1,212,727.63 and 429,144.48 is: 643,178.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,161.70 : 1,212,727.63 = 429,144.48 : x
  2. Step 2: Convert to fraction form
    809,161.70/1,212,727.63 = 429,144.48/x
  3. Step 3: Cross multiply
    809,161.70x = 1,212,727.63 × 429,144.48
  4. Step 4: Simplify right side
    809,161.70x = 520,435,368,157.98
  5. Step 5: Solve for x
    x = 520,435,368,157.98/809,161.70
  6. Step 6: Final answer
    x = 643,178.45

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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.