Home / 1,261,765.69-1,741,243.94-688,811.78

Finding the Fourth Proportional to 1,261,765.69, 1,741,243.94 and 688,811.78

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Solution

The fourth proportional to 1,261,765.69, 1,741,243.94 and 688,811.78 is: 950,564.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,765.69 : 1,741,243.94 = 688,811.78 : x
  2. Step 2: Convert to fraction form
    1,261,765.69/1,741,243.94 = 688,811.78/x
  3. Step 3: Cross multiply
    1,261,765.69x = 1,741,243.94 × 688,811.78
  4. Step 4: Simplify right side
    1,261,765.69x = 1,199,389,341,217.71
  5. Step 5: Solve for x
    x = 1,199,389,341,217.71/1,261,765.69
  6. Step 6: Final answer
    x = 950,564.24

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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.