Home / 899,396.29-1,241,183.19-491,515.39

Finding the Fourth Proportional to 899,396.29, 1,241,183.19 and 491,515.39

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Solution

The fourth proportional to 899,396.29, 1,241,183.19 and 491,515.39 is: 678,300.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,396.29 : 1,241,183.19 = 491,515.39 : x
  2. Step 2: Convert to fraction form
    899,396.29/1,241,183.19 = 491,515.39/x
  3. Step 3: Cross multiply
    899,396.29x = 1,241,183.19 × 491,515.39
  4. Step 4: Simplify right side
    899,396.29x = 610,060,639,694.29
  5. Step 5: Solve for x
    x = 610,060,639,694.29/899,396.29
  6. Step 6: Final answer
    x = 678,300.15

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.