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Finding the Fourth Proportional to 518,812.70, 776,469.45 and 455,827.10

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Solution

The fourth proportional to 518,812.70, 776,469.45 and 455,827.10 is: 682,203.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,812.70 : 776,469.45 = 455,827.10 : x
  2. Step 2: Convert to fraction form
    518,812.70/776,469.45 = 455,827.10/x
  3. Step 3: Cross multiply
    518,812.70x = 776,469.45 × 455,827.10
  4. Step 4: Simplify right side
    518,812.70x = 353,935,817,632.10
  5. Step 5: Solve for x
    x = 353,935,817,632.10/518,812.70
  6. Step 6: Final answer
    x = 682,203.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.