Home / 440,723.85-661,887.68-385,611.45

Finding the Fourth Proportional to 440,723.85, 661,887.68 and 385,611.45

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Solution

The fourth proportional to 440,723.85, 661,887.68 and 385,611.45 is: 579,118.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,723.85 : 661,887.68 = 385,611.45 : x
  2. Step 2: Convert to fraction form
    440,723.85/661,887.68 = 385,611.45/x
  3. Step 3: Cross multiply
    440,723.85x = 661,887.68 × 385,611.45
  4. Step 4: Simplify right side
    440,723.85x = 255,231,466,093.88
  5. Step 5: Solve for x
    x = 255,231,466,093.88/440,723.85
  6. Step 6: Final answer
    x = 579,118.80

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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.