Home / 1,238,183.57-1,708,780.97-687,079.55

Finding the Fourth Proportional to 1,238,183.57, 1,708,780.97 and 687,079.55

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Solution

The fourth proportional to 1,238,183.57, 1,708,780.97 and 687,079.55 is: 948,218.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,183.57 : 1,708,780.97 = 687,079.55 : x
  2. Step 2: Convert to fraction form
    1,238,183.57/1,708,780.97 = 687,079.55/x
  3. Step 3: Cross multiply
    1,238,183.57x = 1,708,780.97 × 687,079.55
  4. Step 4: Simplify right side
    1,238,183.57x = 1,174,068,453,089.96
  5. Step 5: Solve for x
    x = 1,174,068,453,089.96/1,238,183.57
  6. Step 6: Final answer
    x = 948,218.41

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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.