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Finding the Fourth Proportional to 553,519.72, 763,833.54 and 308,491.41

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Solution

The fourth proportional to 553,519.72, 763,833.54 and 308,491.41 is: 425,704.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,519.72 : 763,833.54 = 308,491.41 : x
  2. Step 2: Convert to fraction form
    553,519.72/763,833.54 = 308,491.41/x
  3. Step 3: Cross multiply
    553,519.72x = 763,833.54 × 308,491.41
  4. Step 4: Simplify right side
    553,519.72x = 235,636,085,759.89
  5. Step 5: Solve for x
    x = 235,636,085,759.89/553,519.72
  6. Step 6: Final answer
    x = 425,704.95

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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.