Home / 919,960.30-1,379,940.45-415,091.35

Finding the Fourth Proportional to 919,960.30, 1,379,940.45 and 415,091.35

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Solution

The fourth proportional to 919,960.30, 1,379,940.45 and 415,091.35 is: 622,637.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,960.30 : 1,379,940.45 = 415,091.35 : x
  2. Step 2: Convert to fraction form
    919,960.30/1,379,940.45 = 415,091.35/x
  3. Step 3: Cross multiply
    919,960.30x = 1,379,940.45 × 415,091.35
  4. Step 4: Simplify right side
    919,960.30x = 572,801,344,310.11
  5. Step 5: Solve for x
    x = 572,801,344,310.11/919,960.30
  6. Step 6: Final answer
    x = 622,637.03

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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.