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Finding the Fourth Proportional to 571,999.27, 789,348.49 and 317,344.99

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Solution

The fourth proportional to 571,999.27, 789,348.49 and 317,344.99 is: 437,930.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,999.27 : 789,348.49 = 317,344.99 : x
  2. Step 2: Convert to fraction form
    571,999.27/789,348.49 = 317,344.99/x
  3. Step 3: Cross multiply
    571,999.27x = 789,348.49 × 317,344.99
  4. Step 4: Simplify right side
    571,999.27x = 250,495,788,665.57
  5. Step 5: Solve for x
    x = 250,495,788,665.57/571,999.27
  6. Step 6: Final answer
    x = 437,930.26

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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.