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Finding the Fourth Proportional to 522,860.67, 721,518.39 and 293,396.58

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Solution

The fourth proportional to 522,860.67, 721,518.39 and 293,396.58 is: 404,870.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,860.67 : 721,518.39 = 293,396.58 : x
  2. Step 2: Convert to fraction form
    522,860.67/721,518.39 = 293,396.58/x
  3. Step 3: Cross multiply
    522,860.67x = 721,518.39 × 293,396.58
  4. Step 4: Simplify right side
    522,860.67x = 211,691,028,033.11
  5. Step 5: Solve for x
    x = 211,691,028,033.11/522,860.67
  6. Step 6: Final answer
    x = 404,870.82

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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.