Home / 527,488.24-727,918.62-309,693.28

Finding the Fourth Proportional to 527,488.24, 727,918.62 and 309,693.28

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Solution

The fourth proportional to 527,488.24, 727,918.62 and 309,693.28 is: 427,367.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,488.24 : 727,918.62 = 309,693.28 : x
  2. Step 2: Convert to fraction form
    527,488.24/727,918.62 = 309,693.28/x
  3. Step 3: Cross multiply
    527,488.24x = 727,918.62 × 309,693.28
  4. Step 4: Simplify right side
    527,488.24x = 225,431,505,000.87
  5. Step 5: Solve for x
    x = 225,431,505,000.87/527,488.24
  6. Step 6: Final answer
    x = 427,367.83

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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.