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Finding the Fourth Proportional to 526,865.60, 727,028.52 and 311,967.20

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Solution

The fourth proportional to 526,865.60, 727,028.52 and 311,967.20 is: 430,487.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,865.60 : 727,028.52 = 311,967.20 : x
  2. Step 2: Convert to fraction form
    526,865.60/727,028.52 = 311,967.20/x
  3. Step 3: Cross multiply
    526,865.60x = 727,028.52 × 311,967.20
  4. Step 4: Simplify right side
    526,865.60x = 226,809,051,704.54
  5. Step 5: Solve for x
    x = 226,809,051,704.54/526,865.60
  6. Step 6: Final answer
    x = 430,487.49

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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.