Home / 664,110.80-996,166.20-427,720.40

Finding the Fourth Proportional to 664,110.80, 996,166.20 and 427,720.40

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Solution

The fourth proportional to 664,110.80, 996,166.20 and 427,720.40 is: 641,580.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,110.80 : 996,166.20 = 427,720.40 : x
  2. Step 2: Convert to fraction form
    664,110.80/996,166.20 = 427,720.40/x
  3. Step 3: Cross multiply
    664,110.80x = 996,166.20 × 427,720.40
  4. Step 4: Simplify right side
    664,110.80x = 426,080,605,530.48
  5. Step 5: Solve for x
    x = 426,080,605,530.48/664,110.80
  6. Step 6: Final answer
    x = 641,580.60

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1.5x scale

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.