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Finding the Fourth Proportional to 540,855, 809,621.73 and 340,236.05

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Solution

The fourth proportional to 540,855, 809,621.73 and 340,236.05 is: 509,309.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,855 : 809,621.73 = 340,236.05 : x
  2. Step 2: Convert to fraction form
    540,855/809,621.73 = 340,236.05/x
  3. Step 3: Cross multiply
    540,855x = 809,621.73 × 340,236.05
  4. Step 4: Simplify right side
    540,855x = 275,462,495,361.26
  5. Step 5: Solve for x
    x = 275,462,495,361.26/540,855
  6. Step 6: Final answer
    x = 509,309.33

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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.