Home / 2,980,315.20-4,112,720.70-1,691,078.64

Finding the Fourth Proportional to 2,980,315.20, 4,112,720.70 and 1,691,078.64

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Solution

The fourth proportional to 2,980,315.20, 4,112,720.70 and 1,691,078.64 is: 2,333,623.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,980,315.20 : 4,112,720.70 = 1,691,078.64 : x
  2. Step 2: Convert to fraction form
    2,980,315.20/4,112,720.70 = 1,691,078.64/x
  3. Step 3: Cross multiply
    2,980,315.20x = 4,112,720.70 × 1,691,078.64
  4. Step 4: Simplify right side
    2,980,315.20x = 6,954,934,128,055.85
  5. Step 5: Solve for x
    x = 6,954,934,128,055.85/2,980,315.20
  6. Step 6: Final answer
    x = 2,333,623.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.