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Finding the Fourth Proportional to 484,717.87, 668,737.52 and 280,657.41

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Solution

The fourth proportional to 484,717.87, 668,737.52 and 280,657.41 is: 387,206.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,717.87 : 668,737.52 = 280,657.41 : x
  2. Step 2: Convert to fraction form
    484,717.87/668,737.52 = 280,657.41/x
  3. Step 3: Cross multiply
    484,717.87x = 668,737.52 × 280,657.41
  4. Step 4: Simplify right side
    484,717.87x = 187,686,137,474.44
  5. Step 5: Solve for x
    x = 187,686,137,474.44/484,717.87
  6. Step 6: Final answer
    x = 387,206.97

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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.