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Finding the Fourth Proportional to 1,260,794.56, 1,739,835.84 and 687,800.56

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Solution

The fourth proportional to 1,260,794.56, 1,739,835.84 and 687,800.56 is: 949,131.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,794.56 : 1,739,835.84 = 687,800.56 : x
  2. Step 2: Convert to fraction form
    1,260,794.56/1,739,835.84 = 687,800.56/x
  3. Step 3: Cross multiply
    1,260,794.56x = 1,739,835.84 × 687,800.56
  4. Step 4: Simplify right side
    1,260,794.56x = 1,196,660,065,060.07
  5. Step 5: Solve for x
    x = 1,196,660,065,060.07/1,260,794.56
  6. Step 6: Final answer
    x = 949,131.68

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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.