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Finding the Fourth Proportional to 665,205.40, 996,713.70 and 384,232.60

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Solution

The fourth proportional to 665,205.40, 996,713.70 and 384,232.60 is: 575,716.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,205.40 : 996,713.70 = 384,232.60 : x
  2. Step 2: Convert to fraction form
    665,205.40/996,713.70 = 384,232.60/x
  3. Step 3: Cross multiply
    665,205.40x = 996,713.70 × 384,232.60
  4. Step 4: Simplify right side
    665,205.40x = 382,969,896,406.62
  5. Step 5: Solve for x
    x = 382,969,896,406.62/665,205.40
  6. Step 6: Final answer
    x = 575,716.76

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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.