Home / 664,939.89-997,121.30-365,330.61

Finding the Fourth Proportional to 664,939.89, 997,121.30 and 365,330.61

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Solution

The fourth proportional to 664,939.89, 997,121.30 and 365,330.61 is: 547,837.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,939.89 : 997,121.30 = 365,330.61 : x
  2. Step 2: Convert to fraction form
    664,939.89/997,121.30 = 365,330.61/x
  3. Step 3: Cross multiply
    664,939.89x = 997,121.30 × 365,330.61
  4. Step 4: Simplify right side
    664,939.89x = 364,278,930,946.34
  5. Step 5: Solve for x
    x = 364,278,930,946.34/664,939.89
  6. Step 6: Final answer
    x = 547,837.39

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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.