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Finding the Fourth Proportional to 512,742.49, 707,602.13 and 321,861.13

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Solution

The fourth proportional to 512,742.49, 707,602.13 and 321,861.13 is: 444,179.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,742.49 : 707,602.13 = 321,861.13 : x
  2. Step 2: Convert to fraction form
    512,742.49/707,602.13 = 321,861.13/x
  3. Step 3: Cross multiply
    512,742.49x = 707,602.13 × 321,861.13
  4. Step 4: Simplify right side
    512,742.49x = 227,749,618,980.88
  5. Step 5: Solve for x
    x = 227,749,618,980.88/512,742.49
  6. Step 6: Final answer
    x = 444,179.34

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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.