Home / 806,861.79-1,209,942.77-274,239.81

Finding the Fourth Proportional to 806,861.79, 1,209,942.77 and 274,239.81

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Solution

The fourth proportional to 806,861.79, 1,209,942.77 and 274,239.81 is: 411,240.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,861.79 : 1,209,942.77 = 274,239.81 : x
  2. Step 2: Convert to fraction form
    806,861.79/1,209,942.77 = 274,239.81/x
  3. Step 3: Cross multiply
    806,861.79x = 1,209,942.77 × 274,239.81
  4. Step 4: Simplify right side
    806,861.79x = 331,814,473,984.48
  5. Step 5: Solve for x
    x = 331,814,473,984.48/806,861.79
  6. Step 6: Final answer
    x = 411,240.78

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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.