Home / 1,287,627.70-1,930,673.55-789,349.30

Finding the Fourth Proportional to 1,287,627.70, 1,930,673.55 and 789,349.30

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Solution

The fourth proportional to 1,287,627.70, 1,930,673.55 and 789,349.30 is: 1,183,553.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,627.70 : 1,930,673.55 = 789,349.30 : x
  2. Step 2: Convert to fraction form
    1,287,627.70/1,930,673.55 = 789,349.30/x
  3. Step 3: Cross multiply
    1,287,627.70x = 1,930,673.55 × 789,349.30
  4. Step 4: Simplify right side
    1,287,627.70x = 1,523,975,815,221.02
  5. Step 5: Solve for x
    x = 1,523,975,815,221.02/1,287,627.70
  6. Step 6: Final answer
    x = 1,183,553.15

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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.