Home / 919,476.80-1,379,201.34-413,680.60

Finding the Fourth Proportional to 919,476.80, 1,379,201.34 and 413,680.60

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Solution

The fourth proportional to 919,476.80, 1,379,201.34 and 413,680.60 is: 620,514.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,476.80 : 1,379,201.34 = 413,680.60 : x
  2. Step 2: Convert to fraction form
    919,476.80/1,379,201.34 = 413,680.60/x
  3. Step 3: Cross multiply
    919,476.80x = 1,379,201.34 × 413,680.60
  4. Step 4: Simplify right side
    919,476.80x = 570,548,834,404.00
  5. Step 5: Solve for x
    x = 570,548,834,404.00/919,476.80
  6. Step 6: Final answer
    x = 620,514.66

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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.