Home / 666,564.80-999,847.20-427,416.35

Finding the Fourth Proportional to 666,564.80, 999,847.20 and 427,416.35

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Solution

The fourth proportional to 666,564.80, 999,847.20 and 427,416.35 is: 641,124.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,564.80 : 999,847.20 = 427,416.35 : x
  2. Step 2: Convert to fraction form
    666,564.80/999,847.20 = 427,416.35/x
  3. Step 3: Cross multiply
    666,564.80x = 999,847.20 × 427,416.35
  4. Step 4: Simplify right side
    666,564.80x = 427,351,040,781.72
  5. Step 5: Solve for x
    x = 427,351,040,781.72/666,564.80
  6. Step 6: Final answer
    x = 641,124.53

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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.