Home / 1,126,190.41-1,688,538.20-789,638.79

Finding the Fourth Proportional to 1,126,190.41, 1,688,538.20 and 789,638.79

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Solution

The fourth proportional to 1,126,190.41, 1,688,538.20 and 789,638.79 is: 1,183,934.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126,190.41 : 1,688,538.20 = 789,638.79 : x
  2. Step 2: Convert to fraction form
    1,126,190.41/1,688,538.20 = 789,638.79/x
  3. Step 3: Cross multiply
    1,126,190.41x = 1,688,538.20 × 789,638.79
  4. Step 4: Simplify right side
    1,126,190.41x = 1,333,335,260,818.80
  5. Step 5: Solve for x
    x = 1,333,335,260,818.80/1,126,190.41
  6. Step 6: Final answer
    x = 1,183,934.13

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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.