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Finding the Fourth Proportional to 572,012.91, 789,377.91 and 317,363.49

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Solution

The fourth proportional to 572,012.91, 789,377.91 and 317,363.49 is: 437,961.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,012.91 : 789,377.91 = 317,363.49 : x
  2. Step 2: Convert to fraction form
    572,012.91/789,377.91 = 317,363.49/x
  3. Step 3: Cross multiply
    572,012.91x = 789,377.91 × 317,363.49
  4. Step 4: Simplify right side
    572,012.91x = 250,519,722,912.80
  5. Step 5: Solve for x
    x = 250,519,722,912.80/572,012.91
  6. Step 6: Final answer
    x = 437,961.66

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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.