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Finding the Fourth Proportional to 702,723.69, 969,759.05 and 380,433.78

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Solution

The fourth proportional to 702,723.69, 969,759.05 and 380,433.78 is: 524,998.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,723.69 : 969,759.05 = 380,433.78 : x
  2. Step 2: Convert to fraction form
    702,723.69/969,759.05 = 380,433.78/x
  3. Step 3: Cross multiply
    702,723.69x = 969,759.05 × 380,433.78
  4. Step 4: Simplify right side
    702,723.69x = 368,929,099,178.54
  5. Step 5: Solve for x
    x = 368,929,099,178.54/702,723.69
  6. Step 6: Final answer
    x = 524,998.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.