Home / 1,109,391.40-1,664,743.20-731,404.90

Finding the Fourth Proportional to 1,109,391.40, 1,664,743.20 and 731,404.90

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Solution

The fourth proportional to 1,109,391.40, 1,664,743.20 and 731,404.90 is: 1,097,539.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,109,391.40 : 1,664,743.20 = 731,404.90 : x
  2. Step 2: Convert to fraction form
    1,109,391.40/1,664,743.20 = 731,404.90/x
  3. Step 3: Cross multiply
    1,109,391.40x = 1,664,743.20 × 731,404.90
  4. Step 4: Simplify right side
    1,109,391.40x = 1,217,601,333,721.68
  5. Step 5: Solve for x
    x = 1,217,601,333,721.68/1,109,391.40
  6. Step 6: Final answer
    x = 1,097,539.91

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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.