Home / 920,077.79-1,380,171.81-288,991.60

Finding the Fourth Proportional to 920,077.79, 1,380,171.81 and 288,991.60

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Solution

The fourth proportional to 920,077.79, 1,380,171.81 and 288,991.60 is: 433,504.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,077.79 : 1,380,171.81 = 288,991.60 : x
  2. Step 2: Convert to fraction form
    920,077.79/1,380,171.81 = 288,991.60/x
  3. Step 3: Cross multiply
    920,077.79x = 1,380,171.81 × 288,991.60
  4. Step 4: Simplify right side
    920,077.79x = 398,858,055,654.51
  5. Step 5: Solve for x
    x = 398,858,055,654.51/920,077.79
  6. Step 6: Final answer
    x = 433,504.71

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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.