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Finding the Fourth Proportional to 665,343.35, 996,866.85 and 309,627.80

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Solution

The fourth proportional to 665,343.35, 996,866.85 and 309,627.80 is: 463,907.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,343.35 : 996,866.85 = 309,627.80 : x
  2. Step 2: Convert to fraction form
    665,343.35/996,866.85 = 309,627.80/x
  3. Step 3: Cross multiply
    665,343.35x = 996,866.85 × 309,627.80
  4. Step 4: Simplify right side
    665,343.35x = 308,657,689,658.43
  5. Step 5: Solve for x
    x = 308,657,689,658.43/665,343.35
  6. Step 6: Final answer
    x = 463,907.38

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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.