Home / 874,453.20-1,311,679.80-313,544.40

Finding the Fourth Proportional to 874,453.20, 1,311,679.80 and 313,544.40

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Solution

The fourth proportional to 874,453.20, 1,311,679.80 and 313,544.40 is: 470,316.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,453.20 : 1,311,679.80 = 313,544.40 : x
  2. Step 2: Convert to fraction form
    874,453.20/1,311,679.80 = 313,544.40/x
  3. Step 3: Cross multiply
    874,453.20x = 1,311,679.80 × 313,544.40
  4. Step 4: Simplify right side
    874,453.20x = 411,269,855,883.12
  5. Step 5: Solve for x
    x = 411,269,855,883.12/874,453.20
  6. Step 6: Final answer
    x = 470,316.60

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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.