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Finding the Fourth Proportional to 520,046.73, 717,650.73 and 290,605.91

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Solution

The fourth proportional to 520,046.73, 717,650.73 and 290,605.91 is: 401,028.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,046.73 : 717,650.73 = 290,605.91 : x
  2. Step 2: Convert to fraction form
    520,046.73/717,650.73 = 290,605.91/x
  3. Step 3: Cross multiply
    520,046.73x = 717,650.73 × 290,605.91
  4. Step 4: Simplify right side
    520,046.73x = 208,553,539,865.56
  5. Step 5: Solve for x
    x = 208,553,539,865.56/520,046.73
  6. Step 6: Final answer
    x = 401,028.46

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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.