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Finding the Fourth Proportional to 484,990.20, 727,485.30 and 275,038.20

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Solution

The fourth proportional to 484,990.20, 727,485.30 and 275,038.20 is: 412,557.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,990.20 : 727,485.30 = 275,038.20 : x
  2. Step 2: Convert to fraction form
    484,990.20/727,485.30 = 275,038.20/x
  3. Step 3: Cross multiply
    484,990.20x = 727,485.30 × 275,038.20
  4. Step 4: Simplify right side
    484,990.20x = 200,086,247,438.46
  5. Step 5: Solve for x
    x = 200,086,247,438.46/484,990.20
  6. Step 6: Final answer
    x = 412,557.30

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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.