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Finding the Fourth Proportional to 522,091.70, 783,137.55 and 515,093.30

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Solution

The fourth proportional to 522,091.70, 783,137.55 and 515,093.30 is: 772,639.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,091.70 : 783,137.55 = 515,093.30 : x
  2. Step 2: Convert to fraction form
    522,091.70/783,137.55 = 515,093.30/x
  3. Step 3: Cross multiply
    522,091.70x = 783,137.55 × 515,093.30
  4. Step 4: Simplify right side
    522,091.70x = 403,388,904,983.42
  5. Step 5: Solve for x
    x = 403,388,904,983.42/522,091.70
  6. Step 6: Final answer
    x = 772,639.95

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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.