Home / 2,100,487.20-3,151,605.60-680,978.40

Finding the Fourth Proportional to 2,100,487.20, 3,151,605.60 and 680,978.40

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Solution

The fourth proportional to 2,100,487.20, 3,151,605.60 and 680,978.40 is: 1,021,751.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,100,487.20 : 3,151,605.60 = 680,978.40 : x
  2. Step 2: Convert to fraction form
    2,100,487.20/3,151,605.60 = 680,978.40/x
  3. Step 3: Cross multiply
    2,100,487.20x = 3,151,605.60 × 680,978.40
  4. Step 4: Simplify right side
    2,100,487.20x = 2,146,175,338,919.04
  5. Step 5: Solve for x
    x = 2,146,175,338,919.04/2,100,487.20
  6. Step 6: Final answer
    x = 1,021,751.21

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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.