Home / 885,136.60-1,328,136.90-411,578.20

Finding the Fourth Proportional to 885,136.60, 1,328,136.90 and 411,578.20

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Solution

The fourth proportional to 885,136.60, 1,328,136.90 and 411,578.20 is: 617,568.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,136.60 : 1,328,136.90 = 411,578.20 : x
  2. Step 2: Convert to fraction form
    885,136.60/1,328,136.90 = 411,578.20/x
  3. Step 3: Cross multiply
    885,136.60x = 1,328,136.90 × 411,578.20
  4. Step 4: Simplify right side
    885,136.60x = 546,632,194,655.58
  5. Step 5: Solve for x
    x = 546,632,194,655.58/885,136.60
  6. Step 6: Final answer
    x = 617,568.17

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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.