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Finding the Fourth Proportional to 611,861.94, 917,477.77 and 274,613.48

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Solution

The fourth proportional to 611,861.94, 917,477.77 and 274,613.48 is: 411,778.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,861.94 : 917,477.77 = 274,613.48 : x
  2. Step 2: Convert to fraction form
    611,861.94/917,477.77 = 274,613.48/x
  3. Step 3: Cross multiply
    611,861.94x = 917,477.77 × 274,613.48
  4. Step 4: Simplify right side
    611,861.94x = 251,951,763,242.34
  5. Step 5: Solve for x
    x = 251,951,763,242.34/611,861.94
  6. Step 6: Final answer
    x = 411,778.78

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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.