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Finding the Fourth Proportional to 540,564.60, 809,629.02 and 419,659.06

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Solution

The fourth proportional to 540,564.60, 809,629.02 and 419,659.06 is: 628,543.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,564.60 : 809,629.02 = 419,659.06 : x
  2. Step 2: Convert to fraction form
    540,564.60/809,629.02 = 419,659.06/x
  3. Step 3: Cross multiply
    540,564.60x = 809,629.02 × 419,659.06
  4. Step 4: Simplify right side
    540,564.60x = 339,768,153,481.92
  5. Step 5: Solve for x
    x = 339,768,153,481.92/540,564.60
  6. Step 6: Final answer
    x = 628,543.11

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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.