Home / 1,393,529.28-1,923,090.84-781,817.28

Finding the Fourth Proportional to 1,393,529.28, 1,923,090.84 and 781,817.28

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Solution

The fourth proportional to 1,393,529.28, 1,923,090.84 and 781,817.28 is: 1,078,919.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,393,529.28 : 1,923,090.84 = 781,817.28 : x
  2. Step 2: Convert to fraction form
    1,393,529.28/1,923,090.84 = 781,817.28/x
  3. Step 3: Cross multiply
    1,393,529.28x = 1,923,090.84 × 781,817.28
  4. Step 4: Simplify right side
    1,393,529.28x = 1,503,505,649,721.72
  5. Step 5: Solve for x
    x = 1,503,505,649,721.72/1,393,529.28
  6. Step 6: Final answer
    x = 1,078,919.31

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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.