Home / 919,564.13-1,379,544.72-279,917.88

Finding the Fourth Proportional to 919,564.13, 1,379,544.72 and 279,917.88

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Solution

The fourth proportional to 919,564.13, 1,379,544.72 and 279,917.88 is: 419,937.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,564.13 : 1,379,544.72 = 279,917.88 : x
  2. Step 2: Convert to fraction form
    919,564.13/1,379,544.72 = 279,917.88/x
  3. Step 3: Cross multiply
    919,564.13x = 1,379,544.72 × 279,917.88
  4. Step 4: Simplify right side
    919,564.13x = 386,159,233,387.59
  5. Step 5: Solve for x
    x = 386,159,233,387.59/919,564.13
  6. Step 6: Final answer
    x = 419,937.25

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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.