Home / 858,856.90-1,288,285.35-543,669.70

Finding the Fourth Proportional to 858,856.90, 1,288,285.35 and 543,669.70

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Solution

The fourth proportional to 858,856.90, 1,288,285.35 and 543,669.70 is: 815,504.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,856.90 : 1,288,285.35 = 543,669.70 : x
  2. Step 2: Convert to fraction form
    858,856.90/1,288,285.35 = 543,669.70/x
  3. Step 3: Cross multiply
    858,856.90x = 1,288,285.35 × 543,669.70
  4. Step 4: Simplify right side
    858,856.90x = 700,401,709,748.90
  5. Step 5: Solve for x
    x = 700,401,709,748.90/858,856.90
  6. Step 6: Final answer
    x = 815,504.55

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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.