Home / 919,960.40-1,379,940.60-878,626.10

Finding the Fourth Proportional to 919,960.40, 1,379,940.60 and 878,626.10

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Solution

The fourth proportional to 919,960.40, 1,379,940.60 and 878,626.10 is: 1,317,939.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,960.40 : 1,379,940.60 = 878,626.10 : x
  2. Step 2: Convert to fraction form
    919,960.40/1,379,940.60 = 878,626.10/x
  3. Step 3: Cross multiply
    919,960.40x = 1,379,940.60 × 878,626.10
  4. Step 4: Simplify right side
    919,960.40x = 1,212,451,827,609.66
  5. Step 5: Solve for x
    x = 1,212,451,827,609.66/919,960.40
  6. Step 6: Final answer
    x = 1,317,939.15

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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.