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Finding the Fourth Proportional to 481,910.34, 665,053.43 and 290,886.42

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Solution

The fourth proportional to 481,910.34, 665,053.43 and 290,886.42 is: 401,433.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,910.34 : 665,053.43 = 290,886.42 : x
  2. Step 2: Convert to fraction form
    481,910.34/665,053.43 = 290,886.42/x
  3. Step 3: Cross multiply
    481,910.34x = 665,053.43 × 290,886.42
  4. Step 4: Simplify right side
    481,910.34x = 193,455,009,906.99
  5. Step 5: Solve for x
    x = 193,455,009,906.99/481,910.34
  6. Step 6: Final answer
    x = 401,433.62

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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.