Home / 1,242,120.78-1,863,575.04-443,384.64

Finding the Fourth Proportional to 1,242,120.78, 1,863,575.04 and 443,384.64

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Solution

The fourth proportional to 1,242,120.78, 1,863,575.04 and 443,384.64 is: 665,217.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,120.78 : 1,863,575.04 = 443,384.64 : x
  2. Step 2: Convert to fraction form
    1,242,120.78/1,863,575.04 = 443,384.64/x
  3. Step 3: Cross multiply
    1,242,120.78x = 1,863,575.04 × 443,384.64
  4. Step 4: Simplify right side
    1,242,120.78x = 826,280,548,223.39
  5. Step 5: Solve for x
    x = 826,280,548,223.39/1,242,120.78
  6. Step 6: Final answer
    x = 665,217.55

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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.