Home / 661,421.16-913,211.82-443,955.60

Finding the Fourth Proportional to 661,421.16, 913,211.82 and 443,955.60

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Solution

The fourth proportional to 661,421.16, 913,211.82 and 443,955.60 is: 612,961.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,421.16 : 913,211.82 = 443,955.60 : x
  2. Step 2: Convert to fraction form
    661,421.16/913,211.82 = 443,955.60/x
  3. Step 3: Cross multiply
    661,421.16x = 913,211.82 × 443,955.60
  4. Step 4: Simplify right side
    661,421.16x = 405,425,501,475.19
  5. Step 5: Solve for x
    x = 405,425,501,475.19/661,421.16
  6. Step 6: Final answer
    x = 612,961.19

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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.