Home / 1,396,375.80-2,094,563.70-687,787.80

Finding the Fourth Proportional to 1,396,375.80, 2,094,563.70 and 687,787.80

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Solution

The fourth proportional to 1,396,375.80, 2,094,563.70 and 687,787.80 is: 1,031,681.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,396,375.80 : 2,094,563.70 = 687,787.80 : x
  2. Step 2: Convert to fraction form
    1,396,375.80/2,094,563.70 = 687,787.80/x
  3. Step 3: Cross multiply
    1,396,375.80x = 2,094,563.70 × 687,787.80
  4. Step 4: Simplify right side
    1,396,375.80x = 1,440,615,359,182.86
  5. Step 5: Solve for x
    x = 1,440,615,359,182.86/1,396,375.80
  6. Step 6: Final answer
    x = 1,031,681.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.