Home / 691,919.40-1,037,879.10-411,983.40

Finding the Fourth Proportional to 691,919.40, 1,037,879.10 and 411,983.40

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Solution

The fourth proportional to 691,919.40, 1,037,879.10 and 411,983.40 is: 617,975.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,919.40 : 1,037,879.10 = 411,983.40 : x
  2. Step 2: Convert to fraction form
    691,919.40/1,037,879.10 = 411,983.40/x
  3. Step 3: Cross multiply
    691,919.40x = 1,037,879.10 × 411,983.40
  4. Step 4: Simplify right side
    691,919.40x = 427,588,960,406.94
  5. Step 5: Solve for x
    x = 427,588,960,406.94/691,919.40
  6. Step 6: Final answer
    x = 617,975.10

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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.