Home / 919,828.89-1,379,743.71-413,798.80

Finding the Fourth Proportional to 919,828.89, 1,379,743.71 and 413,798.80

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Solution

The fourth proportional to 919,828.89, 1,379,743.71 and 413,798.80 is: 620,698.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,828.89 : 1,379,743.71 = 413,798.80 : x
  2. Step 2: Convert to fraction form
    919,828.89/1,379,743.71 = 413,798.80/x
  3. Step 3: Cross multiply
    919,828.89x = 1,379,743.71 × 413,798.80
  4. Step 4: Simplify right side
    919,828.89x = 570,936,291,505.55
  5. Step 5: Solve for x
    x = 570,936,291,505.55/919,828.89
  6. Step 6: Final answer
    x = 620,698.37

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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.