Home / 893,426.20-1,340,139.30-515,512.60

Finding the Fourth Proportional to 893,426.20, 1,340,139.30 and 515,512.60

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Solution

The fourth proportional to 893,426.20, 1,340,139.30 and 515,512.60 is: 773,268.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    893,426.20 : 1,340,139.30 = 515,512.60 : x
  2. Step 2: Convert to fraction form
    893,426.20/1,340,139.30 = 515,512.60/x
  3. Step 3: Cross multiply
    893,426.20x = 1,340,139.30 × 515,512.60
  4. Step 4: Simplify right side
    893,426.20x = 690,858,694,905.18
  5. Step 5: Solve for x
    x = 690,858,694,905.18/893,426.20
  6. Step 6: Final answer
    x = 773,268.90

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Double scale
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Similar ratio
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1.5x scale

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.