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Finding the Fourth Proportional to 628,949.84, 867,853.08 and 360,626

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Solution

The fourth proportional to 628,949.84, 867,853.08 and 360,626 is: 497,607.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,949.84 : 867,853.08 = 360,626 : x
  2. Step 2: Convert to fraction form
    628,949.84/867,853.08 = 360,626/x
  3. Step 3: Cross multiply
    628,949.84x = 867,853.08 × 360,626
  4. Step 4: Simplify right side
    628,949.84x = 312,970,384,828.08
  5. Step 5: Solve for x
    x = 312,970,384,828.08/628,949.84
  6. Step 6: Final answer
    x = 497,607.86

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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.