Home / 787,136.40-1,180,704.60-313,894.80

Finding the Fourth Proportional to 787,136.40, 1,180,704.60 and 313,894.80

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Solution

The fourth proportional to 787,136.40, 1,180,704.60 and 313,894.80 is: 470,842.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,136.40 : 1,180,704.60 = 313,894.80 : x
  2. Step 2: Convert to fraction form
    787,136.40/1,180,704.60 = 313,894.80/x
  3. Step 3: Cross multiply
    787,136.40x = 1,180,704.60 × 313,894.80
  4. Step 4: Simplify right side
    787,136.40x = 370,617,034,276.08
  5. Step 5: Solve for x
    x = 370,617,034,276.08/787,136.40
  6. Step 6: Final answer
    x = 470,842.20

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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.