Home / 1,260,961.92-1,740,109.50-687,990.60

Finding the Fourth Proportional to 1,260,961.92, 1,740,109.50 and 687,990.60

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Solution

The fourth proportional to 1,260,961.92, 1,740,109.50 and 687,990.60 is: 949,417.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,961.92 : 1,740,109.50 = 687,990.60 : x
  2. Step 2: Convert to fraction form
    1,260,961.92/1,740,109.50 = 687,990.60/x
  3. Step 3: Cross multiply
    1,260,961.92x = 1,740,109.50 × 687,990.60
  4. Step 4: Simplify right side
    1,260,961.92x = 1,197,178,978,970.70
  5. Step 5: Solve for x
    x = 1,197,178,978,970.70/1,260,961.92
  6. Step 6: Final answer
    x = 949,417.23

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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.