Home / 1,988,002.40-2,982,003.60-1,379,141.60

Finding the Fourth Proportional to 1,988,002.40, 2,982,003.60 and 1,379,141.60

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Solution

The fourth proportional to 1,988,002.40, 2,982,003.60 and 1,379,141.60 is: 2,068,712.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988,002.40 : 2,982,003.60 = 1,379,141.60 : x
  2. Step 2: Convert to fraction form
    1,988,002.40/2,982,003.60 = 1,379,141.60/x
  3. Step 3: Cross multiply
    1,988,002.40x = 2,982,003.60 × 1,379,141.60
  4. Step 4: Simplify right side
    1,988,002.40x = 4,112,605,216,109.76
  5. Step 5: Solve for x
    x = 4,112,605,216,109.76/1,988,002.40
  6. Step 6: Final answer
    x = 2,068,712.40

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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.