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Finding the Fourth Proportional to 539,015.20, 808,004.40 and 419,005.60

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Solution

The fourth proportional to 539,015.20, 808,004.40 and 419,005.60 is: 628,105.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,015.20 : 808,004.40 = 419,005.60 : x
  2. Step 2: Convert to fraction form
    539,015.20/808,004.40 = 419,005.60/x
  3. Step 3: Cross multiply
    539,015.20x = 808,004.40 × 419,005.60
  4. Step 4: Simplify right side
    539,015.20x = 338,558,368,424.64
  5. Step 5: Solve for x
    x = 338,558,368,424.64/539,015.20
  6. Step 6: Final answer
    x = 628,105.42

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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.