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Finding the Fourth Proportional to 608,055.72, 838,912.32 and 393,467.28

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Solution

The fourth proportional to 608,055.72, 838,912.32 and 393,467.28 is: 542,852.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,055.72 : 838,912.32 = 393,467.28 : x
  2. Step 2: Convert to fraction form
    608,055.72/838,912.32 = 393,467.28/x
  3. Step 3: Cross multiply
    608,055.72x = 838,912.32 × 393,467.28
  4. Step 4: Simplify right side
    608,055.72x = 330,084,548,708.89
  5. Step 5: Solve for x
    x = 330,084,548,708.89/608,055.72
  6. Step 6: Final answer
    x = 542,852.47

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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.