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Finding the Fourth Proportional to 490,609.68, 676,980.72 and 283,913.52

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Solution

The fourth proportional to 490,609.68, 676,980.72 and 283,913.52 is: 391,765.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,609.68 : 676,980.72 = 283,913.52 : x
  2. Step 2: Convert to fraction form
    490,609.68/676,980.72 = 283,913.52/x
  3. Step 3: Cross multiply
    490,609.68x = 676,980.72 × 283,913.52
  4. Step 4: Simplify right side
    490,609.68x = 192,203,979,187.33
  5. Step 5: Solve for x
    x = 192,203,979,187.33/490,609.68
  6. Step 6: Final answer
    x = 391,765.57

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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.