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Finding the Fourth Proportional to 549,561.72, 823,269.30 and 378,753.18

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Solution

The fourth proportional to 549,561.72, 823,269.30 and 378,753.18 is: 567,390.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,561.72 : 823,269.30 = 378,753.18 : x
  2. Step 2: Convert to fraction form
    549,561.72/823,269.30 = 378,753.18/x
  3. Step 3: Cross multiply
    549,561.72x = 823,269.30 × 378,753.18
  4. Step 4: Simplify right side
    549,561.72x = 311,815,865,371.37
  5. Step 5: Solve for x
    x = 311,815,865,371.37/549,561.72
  6. Step 6: Final answer
    x = 567,390.07

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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.