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Finding the Fourth Proportional to 527,489.99, 727,921.03 and 309,695.03

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Solution

The fourth proportional to 527,489.99, 727,921.03 and 309,695.03 is: 427,370.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,489.99 : 727,921.03 = 309,695.03 : x
  2. Step 2: Convert to fraction form
    527,489.99/727,921.03 = 309,695.03/x
  3. Step 3: Cross multiply
    527,489.99x = 727,921.03 × 309,695.03
  4. Step 4: Simplify right side
    527,489.99x = 225,433,525,223.48
  5. Step 5: Solve for x
    x = 225,433,525,223.48/527,489.99
  6. Step 6: Final answer
    x = 427,370.24

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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.