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Finding the Fourth Proportional to 644,163.58, 889,016.79 and 368,547.04

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Solution

The fourth proportional to 644,163.58, 889,016.79 and 368,547.04 is: 508,635.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,163.58 : 889,016.79 = 368,547.04 : x
  2. Step 2: Convert to fraction form
    644,163.58/889,016.79 = 368,547.04/x
  3. Step 3: Cross multiply
    644,163.58x = 889,016.79 × 368,547.04
  4. Step 4: Simplify right side
    644,163.58x = 327,644,506,464.80
  5. Step 5: Solve for x
    x = 327,644,506,464.80/644,163.58
  6. Step 6: Final answer
    x = 508,635.56

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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.