Home / 1,231,982.87-1,700,118.18-688,126.59

Finding the Fourth Proportional to 1,231,982.87, 1,700,118.18 and 688,126.59

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Solution

The fourth proportional to 1,231,982.87, 1,700,118.18 and 688,126.59 is: 949,604.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,982.87 : 1,700,118.18 = 688,126.59 : x
  2. Step 2: Convert to fraction form
    1,231,982.87/1,700,118.18 = 688,126.59/x
  3. Step 3: Cross multiply
    1,231,982.87x = 1,700,118.18 × 688,126.59
  4. Step 4: Simplify right side
    1,231,982.87x = 1,169,896,525,800.41
  5. Step 5: Solve for x
    x = 1,169,896,525,800.41/1,231,982.87
  6. Step 6: Final answer
    x = 949,604.54

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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.