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Finding the Fourth Proportional to 978,837.92, 1,351,375.44 and 616,572.32

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Solution

The fourth proportional to 978,837.92, 1,351,375.44 and 616,572.32 is: 851,234.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,837.92 : 1,351,375.44 = 616,572.32 : x
  2. Step 2: Convert to fraction form
    978,837.92/1,351,375.44 = 616,572.32/x
  3. Step 3: Cross multiply
    978,837.92x = 1,351,375.44 × 616,572.32
  4. Step 4: Simplify right side
    978,837.92x = 833,220,690,231.82
  5. Step 5: Solve for x
    x = 833,220,690,231.82/978,837.92
  6. Step 6: Final answer
    x = 851,234.58

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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.