Home / 874,627.20-1,311,940.80-313,588.80

Finding the Fourth Proportional to 874,627.20, 1,311,940.80 and 313,588.80

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Solution

The fourth proportional to 874,627.20, 1,311,940.80 and 313,588.80 is: 470,383.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,627.20 : 1,311,940.80 = 313,588.80 : x
  2. Step 2: Convert to fraction form
    874,627.20/1,311,940.80 = 313,588.80/x
  3. Step 3: Cross multiply
    874,627.20x = 1,311,940.80 × 313,588.80
  4. Step 4: Simplify right side
    874,627.20x = 411,409,941,143.04
  5. Step 5: Solve for x
    x = 411,409,941,143.04/874,627.20
  6. Step 6: Final answer
    x = 470,383.20

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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.