Home / 717,720.85-1,076,791.78-212,295.13

Finding the Fourth Proportional to 717,720.85, 1,076,791.78 and 212,295.13

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Solution

The fourth proportional to 717,720.85, 1,076,791.78 and 212,295.13 is: 318,504.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,720.85 : 1,076,791.78 = 212,295.13 : x
  2. Step 2: Convert to fraction form
    717,720.85/1,076,791.78 = 212,295.13/x
  3. Step 3: Cross multiply
    717,720.85x = 1,076,791.78 × 212,295.13
  4. Step 4: Simplify right side
    717,720.85x = 228,597,651,519.90
  5. Step 5: Solve for x
    x = 228,597,651,519.90/717,720.85
  6. Step 6: Final answer
    x = 318,504.96

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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.