Home / 717,815.20-1,076,528.40-212,375.20

Finding the Fourth Proportional to 717,815.20, 1,076,528.40 and 212,375.20

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Solution

The fourth proportional to 717,815.20, 1,076,528.40 and 212,375.20 is: 318,505.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,815.20 : 1,076,528.40 = 212,375.20 : x
  2. Step 2: Convert to fraction form
    717,815.20/1,076,528.40 = 212,375.20/x
  3. Step 3: Cross multiply
    717,815.20x = 1,076,528.40 × 212,375.20
  4. Step 4: Simplify right side
    717,815.20x = 228,627,934,255.68
  5. Step 5: Solve for x
    x = 228,627,934,255.68/717,815.20
  6. Step 6: Final answer
    x = 318,505.28

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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.