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Finding the Fourth Proportional to 611,230.80, 916,846.20 and 443,269.20

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Solution

The fourth proportional to 611,230.80, 916,846.20 and 443,269.20 is: 664,903.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,230.80 : 916,846.20 = 443,269.20 : x
  2. Step 2: Convert to fraction form
    611,230.80/916,846.20 = 443,269.20/x
  3. Step 3: Cross multiply
    611,230.80x = 916,846.20 × 443,269.20
  4. Step 4: Simplify right side
    611,230.80x = 406,409,681,597.04
  5. Step 5: Solve for x
    x = 406,409,681,597.04/611,230.80
  6. Step 6: Final answer
    x = 664,903.80

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Similar ratio
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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.