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Finding the Fourth Proportional to 1,867,939.20, 2,802,783.60 and 970,394.40

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Solution

The fourth proportional to 1,867,939.20, 2,802,783.60 and 970,394.40 is: 1,456,046.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,867,939.20 : 2,802,783.60 = 970,394.40 : x
  2. Step 2: Convert to fraction form
    1,867,939.20/2,802,783.60 = 970,394.40/x
  3. Step 3: Cross multiply
    1,867,939.20x = 2,802,783.60 × 970,394.40
  4. Step 4: Simplify right side
    1,867,939.20x = 2,719,805,509,851.84
  5. Step 5: Solve for x
    x = 2,719,805,509,851.84/1,867,939.20
  6. Step 6: Final answer
    x = 1,456,046.06

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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.