Home / 665,108.40-996,568.20-384,135.60

Finding the Fourth Proportional to 665,108.40, 996,568.20 and 384,135.60

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Solution

The fourth proportional to 665,108.40, 996,568.20 and 384,135.60 is: 575,571.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,108.40 : 996,568.20 = 384,135.60 : x
  2. Step 2: Convert to fraction form
    665,108.40/996,568.20 = 384,135.60/x
  3. Step 3: Cross multiply
    665,108.40x = 996,568.20 × 384,135.60
  4. Step 4: Simplify right side
    665,108.40x = 382,817,323,447.92
  5. Step 5: Solve for x
    x = 382,817,323,447.92/665,108.40
  6. Step 6: Final answer
    x = 575,571.33

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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.