Home / 721,945.75-996,296.90-395,253.26

Finding the Fourth Proportional to 721,945.75, 996,296.90 and 395,253.26

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Solution

The fourth proportional to 721,945.75, 996,296.90 and 395,253.26 is: 545,455.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,945.75 : 996,296.90 = 395,253.26 : x
  2. Step 2: Convert to fraction form
    721,945.75/996,296.90 = 395,253.26/x
  3. Step 3: Cross multiply
    721,945.75x = 996,296.90 × 395,253.26
  4. Step 4: Simplify right side
    721,945.75x = 393,789,597,652.89
  5. Step 5: Solve for x
    x = 393,789,597,652.89/721,945.75
  6. Step 6: Final answer
    x = 545,455.94

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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.