Home / 1,761,512.40-2,643,305.40-639,435.60

Finding the Fourth Proportional to 1,761,512.40, 2,643,305.40 and 639,435.60

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Solution

The fourth proportional to 1,761,512.40, 2,643,305.40 and 639,435.60 is: 959,529.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,761,512.40 : 2,643,305.40 = 639,435.60 : x
  2. Step 2: Convert to fraction form
    1,761,512.40/2,643,305.40 = 639,435.60/x
  3. Step 3: Cross multiply
    1,761,512.40x = 2,643,305.40 × 639,435.60
  4. Step 4: Simplify right side
    1,761,512.40x = 1,690,223,574,432.24
  5. Step 5: Solve for x
    x = 1,690,223,574,432.24/1,761,512.40
  6. Step 6: Final answer
    x = 959,529.76

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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.