Home / 1,259,713,240.80-1,889,569,861.20-339,682,581.60

Finding the Fourth Proportional to 1,259,713,240.80, 1,889,569,861.20 and 339,682,581.60

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Solution

The fourth proportional to 1,259,713,240.80, 1,889,569,861.20 and 339,682,581.60 is: 509,523,872.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,713,240.80 : 1,889,569,861.20 = 339,682,581.60 : x
  2. Step 2: Convert to fraction form
    1,259,713,240.80/1,889,569,861.20 = 339,682,581.60/x
  3. Step 3: Cross multiply
    1,259,713,240.80x = 1,889,569,861.20 × 339,682,581.60
  4. Step 4: Simplify right side
    1,259,713,240.80x = 641,853,968,565,969,792
  5. Step 5: Solve for x
    x = 641,853,968,565,969,792/1,259,713,240.80
  6. Step 6: Final answer
    x = 509,523,872.40

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Half scale
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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.