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Finding the Fourth Proportional to 436,558.04, 655,259.38 and 315,103.79

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Solution

The fourth proportional to 436,558.04, 655,259.38 and 315,103.79 is: 472,960.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,558.04 : 655,259.38 = 315,103.79 : x
  2. Step 2: Convert to fraction form
    436,558.04/655,259.38 = 315,103.79/x
  3. Step 3: Cross multiply
    436,558.04x = 655,259.38 × 315,103.79
  4. Step 4: Simplify right side
    436,558.04x = 206,474,712,121.84
  5. Step 5: Solve for x
    x = 206,474,712,121.84/436,558.04
  6. Step 6: Final answer
    x = 472,960.51

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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.