Home / 1,210,982.78-1,672,855.99-1,147,209.86

Finding the Fourth Proportional to 1,210,982.78, 1,672,855.99 and 1,147,209.86

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Solution

The fourth proportional to 1,210,982.78, 1,672,855.99 and 1,147,209.86 is: 1,584,759.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,982.78 : 1,672,855.99 = 1,147,209.86 : x
  2. Step 2: Convert to fraction form
    1,210,982.78/1,672,855.99 = 1,147,209.86/x
  3. Step 3: Cross multiply
    1,210,982.78x = 1,672,855.99 × 1,147,209.86
  4. Step 4: Simplify right side
    1,210,982.78x = 1,919,116,887,402.18
  5. Step 5: Solve for x
    x = 1,919,116,887,402.18/1,210,982.78
  6. Step 6: Final answer
    x = 1,584,759.85

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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.