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Finding the Fourth Proportional to 490,498.44, 676,890.18 and 286,560.96

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Solution

The fourth proportional to 490,498.44, 676,890.18 and 286,560.96 is: 395,455.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,498.44 : 676,890.18 = 286,560.96 : x
  2. Step 2: Convert to fraction form
    490,498.44/676,890.18 = 286,560.96/x
  3. Step 3: Cross multiply
    490,498.44x = 676,890.18 × 286,560.96
  4. Step 4: Simplify right side
    490,498.44x = 193,970,299,795.37
  5. Step 5: Solve for x
    x = 193,970,299,795.37/490,498.44
  6. Step 6: Final answer
    x = 395,455.49

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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.