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Finding the Fourth Proportional to 486,493.52, 728,428 and 317,595.52

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Solution

The fourth proportional to 486,493.52, 728,428 and 317,595.52 is: 475,536.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,493.52 : 728,428 = 317,595.52 : x
  2. Step 2: Convert to fraction form
    486,493.52/728,428 = 317,595.52/x
  3. Step 3: Cross multiply
    486,493.52x = 728,428 × 317,595.52
  4. Step 4: Simplify right side
    486,493.52x = 231,345,469,442.56
  5. Step 5: Solve for x
    x = 231,345,469,442.56/486,493.52
  6. Step 6: Final answer
    x = 475,536.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.