Home / 1,242,144.79-1,863,611.03-443,409.19

Finding the Fourth Proportional to 1,242,144.79, 1,863,611.03 and 443,409.19

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Solution

The fourth proportional to 1,242,144.79, 1,863,611.03 and 443,409.19 is: 665,254.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,144.79 : 1,863,611.03 = 443,409.19 : x
  2. Step 2: Convert to fraction form
    1,242,144.79/1,863,611.03 = 443,409.19/x
  3. Step 3: Cross multiply
    1,242,144.79x = 1,863,611.03 × 443,409.19
  4. Step 4: Simplify right side
    1,242,144.79x = 826,342,257,287.37
  5. Step 5: Solve for x
    x = 826,342,257,287.37/1,242,144.79
  6. Step 6: Final answer
    x = 665,254.38

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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.