Home / 1,260,721.40-1,739,799.61-687,773.57

Finding the Fourth Proportional to 1,260,721.40, 1,739,799.61 and 687,773.57

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Solution

The fourth proportional to 1,260,721.40, 1,739,799.61 and 687,773.57 is: 949,129.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,721.40 : 1,739,799.61 = 687,773.57 : x
  2. Step 2: Convert to fraction form
    1,260,721.40/1,739,799.61 = 687,773.57/x
  3. Step 3: Cross multiply
    1,260,721.40x = 1,739,799.61 × 687,773.57
  4. Step 4: Simplify right side
    1,260,721.40x = 1,196,588,178,435.88
  5. Step 5: Solve for x
    x = 1,196,588,178,435.88/1,260,721.40
  6. Step 6: Final answer
    x = 949,129.75

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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.