Home / 666,820.80-1,000,231.20-427,672.35

Finding the Fourth Proportional to 666,820.80, 1,000,231.20 and 427,672.35

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Solution

The fourth proportional to 666,820.80, 1,000,231.20 and 427,672.35 is: 641,508.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,820.80 : 1,000,231.20 = 427,672.35 : x
  2. Step 2: Convert to fraction form
    666,820.80/1,000,231.20 = 427,672.35/x
  3. Step 3: Cross multiply
    666,820.80x = 1,000,231.20 × 427,672.35
  4. Step 4: Simplify right side
    666,820.80x = 427,771,227,847.32
  5. Step 5: Solve for x
    x = 427,771,227,847.32/666,820.80
  6. Step 6: Final answer
    x = 641,508.53

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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.