Home / 743,136.40-1,114,704.60-519,187.60

Finding the Fourth Proportional to 743,136.40, 1,114,704.60 and 519,187.60

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Solution

The fourth proportional to 743,136.40, 1,114,704.60 and 519,187.60 is: 778,781.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,136.40 : 1,114,704.60 = 519,187.60 : x
  2. Step 2: Convert to fraction form
    743,136.40/1,114,704.60 = 519,187.60/x
  3. Step 3: Cross multiply
    743,136.40x = 1,114,704.60 × 519,187.60
  4. Step 4: Simplify right side
    743,136.40x = 578,740,805,982.96
  5. Step 5: Solve for x
    x = 578,740,805,982.96/743,136.40
  6. Step 6: Final answer
    x = 778,781.40

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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.