Home / 665,337.35-996,857.85-309,621.80

Finding the Fourth Proportional to 665,337.35, 996,857.85 and 309,621.80

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Solution

The fourth proportional to 665,337.35, 996,857.85 and 309,621.80 is: 463,898.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,337.35 : 996,857.85 = 309,621.80 : x
  2. Step 2: Convert to fraction form
    665,337.35/996,857.85 = 309,621.80/x
  3. Step 3: Cross multiply
    665,337.35x = 996,857.85 × 309,621.80
  4. Step 4: Simplify right side
    665,337.35x = 308,648,921,861.13
  5. Step 5: Solve for x
    x = 308,648,921,861.13/665,337.35
  6. Step 6: Final answer
    x = 463,898.38

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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.