Home / 2,172,149.45-2,997,586.87-1,205,369.72

Finding the Fourth Proportional to 2,172,149.45, 2,997,586.87 and 1,205,369.72

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Solution

The fourth proportional to 2,172,149.45, 2,997,586.87 and 1,205,369.72 is: 1,663,421.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172,149.45 : 2,997,586.87 = 1,205,369.72 : x
  2. Step 2: Convert to fraction form
    2,172,149.45/2,997,586.87 = 1,205,369.72/x
  3. Step 3: Cross multiply
    2,172,149.45x = 2,997,586.87 × 1,205,369.72
  4. Step 4: Simplify right side
    2,172,149.45x = 3,613,200,428,166.22
  5. Step 5: Solve for x
    x = 3,613,200,428,166.22/2,172,149.45
  6. Step 6: Final answer
    x = 1,663,421.66

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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.