Home / 2,815,540.20-4,223,310.30-685,607.40

Finding the Fourth Proportional to 2,815,540.20, 4,223,310.30 and 685,607.40

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Solution

The fourth proportional to 2,815,540.20, 4,223,310.30 and 685,607.40 is: 1,028,411.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815,540.20 : 4,223,310.30 = 685,607.40 : x
  2. Step 2: Convert to fraction form
    2,815,540.20/4,223,310.30 = 685,607.40/x
  3. Step 3: Cross multiply
    2,815,540.20x = 4,223,310.30 × 685,607.40
  4. Step 4: Simplify right side
    2,815,540.20x = 2,895,532,794,176.22
  5. Step 5: Solve for x
    x = 2,895,532,794,176.22/2,815,540.20
  6. Step 6: Final answer
    x = 1,028,411.10

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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.