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Finding the Fourth Proportional to 644,657.36, 967,405.64 and 245,301.44

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Solution

The fourth proportional to 644,657.36, 967,405.64 and 245,301.44 is: 368,111.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,657.36 : 967,405.64 = 245,301.44 : x
  2. Step 2: Convert to fraction form
    644,657.36/967,405.64 = 245,301.44/x
  3. Step 3: Cross multiply
    644,657.36x = 967,405.64 × 245,301.44
  4. Step 4: Simplify right side
    644,657.36x = 237,305,990,492.59
  5. Step 5: Solve for x
    x = 237,305,990,492.59/644,657.36
  6. Step 6: Final answer
    x = 368,111.82

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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.