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Finding the Fourth Proportional to 540,061.20, 809,994.60 and 340,023.60

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Solution

The fourth proportional to 540,061.20, 809,994.60 and 340,023.60 is: 509,974.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,061.20 : 809,994.60 = 340,023.60 : x
  2. Step 2: Convert to fraction form
    540,061.20/809,994.60 = 340,023.60/x
  3. Step 3: Cross multiply
    540,061.20x = 809,994.60 × 340,023.60
  4. Step 4: Simplify right side
    540,061.20x = 275,417,279,872.56
  5. Step 5: Solve for x
    x = 275,417,279,872.56/540,061.20
  6. Step 6: Final answer
    x = 509,974.20

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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.