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Finding the Fourth Proportional to 503,777.21, 695,159.61 and 285,916.60

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Solution

The fourth proportional to 503,777.21, 695,159.61 and 285,916.60 is: 394,534.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,777.21 : 695,159.61 = 285,916.60 : x
  2. Step 2: Convert to fraction form
    503,777.21/695,159.61 = 285,916.60/x
  3. Step 3: Cross multiply
    503,777.21x = 695,159.61 × 285,916.60
  4. Step 4: Simplify right side
    503,777.21x = 198,757,668,672.73
  5. Step 5: Solve for x
    x = 198,757,668,672.73/503,777.21
  6. Step 6: Final answer
    x = 394,534.86

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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.