Home / 3,121,605-4,680,256.14-1,228,563.72

Finding the Fourth Proportional to 3,121,605, 4,680,256.14 and 1,228,563.72

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Solution

The fourth proportional to 3,121,605, 4,680,256.14 and 1,228,563.72 is: 1,841,998.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121,605 : 4,680,256.14 = 1,228,563.72 : x
  2. Step 2: Convert to fraction form
    3,121,605/4,680,256.14 = 1,228,563.72/x
  3. Step 3: Cross multiply
    3,121,605x = 4,680,256.14 × 1,228,563.72
  4. Step 4: Simplify right side
    3,121,605x = 5,749,992,893,911.24
  5. Step 5: Solve for x
    x = 5,749,992,893,911.24/3,121,605
  6. Step 6: Final answer
    x = 1,841,998.87

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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.