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Finding the Fourth Proportional to 503,898, 695,318.76 and 289,026.96

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Solution

The fourth proportional to 503,898, 695,318.76 and 289,026.96 is: 398,822.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,898 : 695,318.76 = 289,026.96 : x
  2. Step 2: Convert to fraction form
    503,898/695,318.76 = 289,026.96/x
  3. Step 3: Cross multiply
    503,898x = 695,318.76 × 289,026.96
  4. Step 4: Simplify right side
    503,898x = 200,965,867,433.77
  5. Step 5: Solve for x
    x = 200,965,867,433.77/503,898
  6. Step 6: Final answer
    x = 398,822.51

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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.