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Finding the Fourth Proportional to 1,260,682.93, 1,739,738.82 and 687,719.01

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Solution

The fourth proportional to 1,260,682.93, 1,739,738.82 and 687,719.01 is: 949,050.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,682.93 : 1,739,738.82 = 687,719.01 : x
  2. Step 2: Convert to fraction form
    1,260,682.93/1,739,738.82 = 687,719.01/x
  3. Step 3: Cross multiply
    1,260,682.93x = 1,739,738.82 × 687,719.01
  4. Step 4: Simplify right side
    1,260,682.93x = 1,196,451,458,948.97
  5. Step 5: Solve for x
    x = 1,196,451,458,948.97/1,260,682.93
  6. Step 6: Final answer
    x = 949,050.26

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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.