Home / 1,761,661.40-2,643,528.90-639,584.60

Finding the Fourth Proportional to 1,761,661.40, 2,643,528.90 and 639,584.60

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Solution

The fourth proportional to 1,761,661.40, 2,643,528.90 and 639,584.60 is: 959,753.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,761,661.40 : 2,643,528.90 = 639,584.60 : x
  2. Step 2: Convert to fraction form
    1,761,661.40/2,643,528.90 = 639,584.60/x
  3. Step 3: Cross multiply
    1,761,661.40x = 2,643,528.90 × 639,584.60
  4. Step 4: Simplify right side
    1,761,661.40x = 1,690,760,374,094.94
  5. Step 5: Solve for x
    x = 1,690,760,374,094.94/1,761,661.40
  6. Step 6: Final answer
    x = 959,753.32

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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.