Home / 527,475.24-727,900.70-309,680.28

Finding the Fourth Proportional to 527,475.24, 727,900.70 and 309,680.28

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Solution

The fourth proportional to 527,475.24, 727,900.70 and 309,680.28 is: 427,349.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,475.24 : 727,900.70 = 309,680.28 : x
  2. Step 2: Convert to fraction form
    527,475.24/727,900.70 = 309,680.28/x
  3. Step 3: Cross multiply
    527,475.24x = 727,900.70 × 309,680.28
  4. Step 4: Simplify right side
    527,475.24x = 225,416,491,039.80
  5. Step 5: Solve for x
    x = 225,416,491,039.80/527,475.24
  6. Step 6: Final answer
    x = 427,349.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.