Home / 899,187.26-1,240,863.94-491,280.35

Finding the Fourth Proportional to 899,187.26, 1,240,863.94 and 491,280.35

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Solution

The fourth proportional to 899,187.26, 1,240,863.94 and 491,280.35 is: 677,958.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,187.26 : 1,240,863.94 = 491,280.35 : x
  2. Step 2: Convert to fraction form
    899,187.26/1,240,863.94 = 491,280.35/x
  3. Step 3: Cross multiply
    899,187.26x = 1,240,863.94 × 491,280.35
  4. Step 4: Simplify right side
    899,187.26x = 609,612,069,517.38
  5. Step 5: Solve for x
    x = 609,612,069,517.38/899,187.26
  6. Step 6: Final answer
    x = 677,958.97

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Double scale
Find fourth proportional to 899,188.26, 1,240,865.32 and 491,281.35
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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.