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Finding the Fourth Proportional to 490,551.45, 676,976.36 and 296,994.66

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Solution

The fourth proportional to 490,551.45, 676,976.36 and 296,994.66 is: 409,861.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,551.45 : 676,976.36 = 296,994.66 : x
  2. Step 2: Convert to fraction form
    490,551.45/676,976.36 = 296,994.66/x
  3. Step 3: Cross multiply
    490,551.45x = 676,976.36 × 296,994.66
  4. Step 4: Simplify right side
    490,551.45x = 201,058,364,608.72
  5. Step 5: Solve for x
    x = 201,058,364,608.72/490,551.45
  6. Step 6: Final answer
    x = 409,861.93

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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.