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Finding the Fourth Proportional to 628,871.84, 867,837.92 and 342,391.36

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Solution

The fourth proportional to 628,871.84, 867,837.92 and 342,391.36 is: 472,497.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,871.84 : 867,837.92 = 342,391.36 : x
  2. Step 2: Convert to fraction form
    628,871.84/867,837.92 = 342,391.36/x
  3. Step 3: Cross multiply
    628,871.84x = 867,837.92 × 342,391.36
  4. Step 4: Simplify right side
    628,871.84x = 297,140,205,688.37
  5. Step 5: Solve for x
    x = 297,140,205,688.37/628,871.84
  6. Step 6: Final answer
    x = 472,497.24

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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.