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Finding the Fourth Proportional to 518,440, 776,960.14 and 269,296.96

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Solution

The fourth proportional to 518,440, 776,960.14 and 269,296.96 is: 403,581.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,440 : 776,960.14 = 269,296.96 : x
  2. Step 2: Convert to fraction form
    518,440/776,960.14 = 269,296.96/x
  3. Step 3: Cross multiply
    518,440x = 776,960.14 × 269,296.96
  4. Step 4: Simplify right side
    518,440x = 209,233,003,743.17
  5. Step 5: Solve for x
    x = 209,233,003,743.17/518,440
  6. Step 6: Final answer
    x = 403,581.91

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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.