Home / 858,797.40-1,288,196.10-543,610.20

Finding the Fourth Proportional to 858,797.40, 1,288,196.10 and 543,610.20

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Solution

The fourth proportional to 858,797.40, 1,288,196.10 and 543,610.20 is: 815,415.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,797.40 : 1,288,196.10 = 543,610.20 : x
  2. Step 2: Convert to fraction form
    858,797.40/1,288,196.10 = 543,610.20/x
  3. Step 3: Cross multiply
    858,797.40x = 1,288,196.10 × 543,610.20
  4. Step 4: Simplify right side
    858,797.40x = 700,276,539,560.22
  5. Step 5: Solve for x
    x = 700,276,539,560.22/858,797.40
  6. Step 6: Final answer
    x = 815,415.30

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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.