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Finding the Fourth Proportional to 569,647.20, 786,111.12 and 321,269.44

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Solution

The fourth proportional to 569,647.20, 786,111.12 and 321,269.44 is: 443,350.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,647.20 : 786,111.12 = 321,269.44 : x
  2. Step 2: Convert to fraction form
    569,647.20/786,111.12 = 321,269.44/x
  3. Step 3: Cross multiply
    569,647.20x = 786,111.12 × 321,269.44
  4. Step 4: Simplify right side
    569,647.20x = 252,553,479,300.17
  5. Step 5: Solve for x
    x = 252,553,479,300.17/569,647.20
  6. Step 6: Final answer
    x = 443,350.69

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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.