Home / 661,421.94-913,213.06-443,956.78

Finding the Fourth Proportional to 661,421.94, 913,213.06 and 443,956.78

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Solution

The fourth proportional to 661,421.94, 913,213.06 and 443,956.78 is: 612,962.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,421.94 : 913,213.06 = 443,956.78 : x
  2. Step 2: Convert to fraction form
    661,421.94/913,213.06 = 443,956.78/x
  3. Step 3: Cross multiply
    661,421.94x = 913,213.06 × 443,956.78
  4. Step 4: Simplify right side
    661,421.94x = 405,427,129,571.55
  5. Step 5: Solve for x
    x = 405,427,129,571.55/661,421.94
  6. Step 6: Final answer
    x = 612,962.93

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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.