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Finding the Fourth Proportional to 628,883.57, 867,840.36 and 349,479.81

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Solution

The fourth proportional to 628,883.57, 867,840.36 and 349,479.81 is: 482,271.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,883.57 : 867,840.36 = 349,479.81 : x
  2. Step 2: Convert to fraction form
    628,883.57/867,840.36 = 349,479.81/x
  3. Step 3: Cross multiply
    628,883.57x = 867,840.36 × 349,479.81
  4. Step 4: Simplify right side
    628,883.57x = 303,292,682,812.58
  5. Step 5: Solve for x
    x = 303,292,682,812.58/628,883.57
  6. Step 6: Final answer
    x = 482,271.59

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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.