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Finding the Fourth Proportional to 699,181.22, 964,898.78 and 393,271.80

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Solution

The fourth proportional to 699,181.22, 964,898.78 and 393,271.80 is: 542,731.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,181.22 : 964,898.78 = 393,271.80 : x
  2. Step 2: Convert to fraction form
    699,181.22/964,898.78 = 393,271.80/x
  3. Step 3: Cross multiply
    699,181.22x = 964,898.78 × 393,271.80
  4. Step 4: Simplify right side
    699,181.22x = 379,467,478,062.05
  5. Step 5: Solve for x
    x = 379,467,478,062.05/699,181.22
  6. Step 6: Final answer
    x = 542,731.23

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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.