Home / 728,680.40-1,093,174.20-307,739.60

Finding the Fourth Proportional to 728,680.40, 1,093,174.20 and 307,739.60

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Solution

The fourth proportional to 728,680.40, 1,093,174.20 and 307,739.60 is: 461,674.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,680.40 : 1,093,174.20 = 307,739.60 : x
  2. Step 2: Convert to fraction form
    728,680.40/1,093,174.20 = 307,739.60/x
  3. Step 3: Cross multiply
    728,680.40x = 1,093,174.20 × 307,739.60
  4. Step 4: Simplify right side
    728,680.40x = 336,412,991,038.32
  5. Step 5: Solve for x
    x = 336,412,991,038.32/728,680.40
  6. Step 6: Final answer
    x = 461,674.27

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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.