Home / 687,255.72-1,030,469.27-308,107.89

Finding the Fourth Proportional to 687,255.72, 1,030,469.27 and 308,107.89

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Solution

The fourth proportional to 687,255.72, 1,030,469.27 and 308,107.89 is: 461,976.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,255.72 : 1,030,469.27 = 308,107.89 : x
  2. Step 2: Convert to fraction form
    687,255.72/1,030,469.27 = 308,107.89/x
  3. Step 3: Cross multiply
    687,255.72x = 1,030,469.27 × 308,107.89
  4. Step 4: Simplify right side
    687,255.72x = 317,495,710,949.00
  5. Step 5: Solve for x
    x = 317,495,710,949.00/687,255.72
  6. Step 6: Final answer
    x = 461,976.09

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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.