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Finding the Fourth Proportional to 611,861.69, 917,477.39 and 274,613.23

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Solution

The fourth proportional to 611,861.69, 917,477.39 and 274,613.23 is: 411,778.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,861.69 : 917,477.39 = 274,613.23 : x
  2. Step 2: Convert to fraction form
    611,861.69/917,477.39 = 274,613.23/x
  3. Step 3: Cross multiply
    611,861.69x = 917,477.39 × 274,613.23
  4. Step 4: Simplify right side
    611,861.69x = 251,951,427,912.71
  5. Step 5: Solve for x
    x = 251,951,427,912.71/611,861.69
  6. Step 6: Final answer
    x = 411,778.40

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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.