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Finding the Fourth Proportional to 484,521.72, 668,260.62 and 314,811

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Solution

The fourth proportional to 484,521.72, 668,260.62 and 314,811 is: 434,192.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,521.72 : 668,260.62 = 314,811 : x
  2. Step 2: Convert to fraction form
    484,521.72/668,260.62 = 314,811/x
  3. Step 3: Cross multiply
    484,521.72x = 668,260.62 × 314,811
  4. Step 4: Simplify right side
    484,521.72x = 210,375,794,042.82
  5. Step 5: Solve for x
    x = 210,375,794,042.82/484,521.72
  6. Step 6: Final answer
    x = 434,192.70

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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.