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Finding the Fourth Proportional to 655,956.72, 905,225.28 and 369,450

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Solution

The fourth proportional to 655,956.72, 905,225.28 and 369,450 is: 509,843.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,956.72 : 905,225.28 = 369,450 : x
  2. Step 2: Convert to fraction form
    655,956.72/905,225.28 = 369,450/x
  3. Step 3: Cross multiply
    655,956.72x = 905,225.28 × 369,450
  4. Step 4: Simplify right side
    655,956.72x = 334,435,479,696
  5. Step 5: Solve for x
    x = 334,435,479,696/655,956.72
  6. Step 6: Final answer
    x = 509,843.82

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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.