Home / 1,389,473.20-2,084,015.40-442,939.60

Finding the Fourth Proportional to 1,389,473.20, 2,084,015.40 and 442,939.60

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Solution

The fourth proportional to 1,389,473.20, 2,084,015.40 and 442,939.60 is: 664,347.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,473.20 : 2,084,015.40 = 442,939.60 : x
  2. Step 2: Convert to fraction form
    1,389,473.20/2,084,015.40 = 442,939.60/x
  3. Step 3: Cross multiply
    1,389,473.20x = 2,084,015.40 × 442,939.60
  4. Step 4: Simplify right side
    1,389,473.20x = 923,092,947,669.84
  5. Step 5: Solve for x
    x = 923,092,947,669.84/1,389,473.20
  6. Step 6: Final answer
    x = 664,347.43

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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.