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Finding the Fourth Proportional to 655,911.37, 905,169.21 and 369,441.64

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Solution

The fourth proportional to 655,911.37, 905,169.21 and 369,441.64 is: 509,835.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,911.37 : 905,169.21 = 369,441.64 : x
  2. Step 2: Convert to fraction form
    655,911.37/905,169.21 = 369,441.64/x
  3. Step 3: Cross multiply
    655,911.37x = 905,169.21 × 369,441.64
  4. Step 4: Simplify right side
    655,911.37x = 334,407,192,894.06
  5. Step 5: Solve for x
    x = 334,407,192,894.06/655,911.37
  6. Step 6: Final answer
    x = 509,835.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.