Home / 899,135.19-1,240,892.39-491,299.04

Finding the Fourth Proportional to 899,135.19, 1,240,892.39 and 491,299.04

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Solution

The fourth proportional to 899,135.19, 1,240,892.39 and 491,299.04 is: 678,039.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,135.19 : 1,240,892.39 = 491,299.04 : x
  2. Step 2: Convert to fraction form
    899,135.19/1,240,892.39 = 491,299.04/x
  3. Step 3: Cross multiply
    899,135.19x = 1,240,892.39 × 491,299.04
  4. Step 4: Simplify right side
    899,135.19x = 609,649,244,280.78
  5. Step 5: Solve for x
    x = 609,649,244,280.78/899,135.19
  6. Step 6: Final answer
    x = 678,039.58

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Double scale
Find fourth proportional to 899,136.19, 1,240,893.77 and 491,300.04
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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.