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Finding the Fourth Proportional to 647,805.51, 893,969.28 and 361,325.37

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Solution

The fourth proportional to 647,805.51, 893,969.28 and 361,325.37 is: 498,627.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,805.51 : 893,969.28 = 361,325.37 : x
  2. Step 2: Convert to fraction form
    647,805.51/893,969.28 = 361,325.37/x
  3. Step 3: Cross multiply
    647,805.51x = 893,969.28 × 361,325.37
  4. Step 4: Simplify right side
    647,805.51x = 323,013,780,864.63
  5. Step 5: Solve for x
    x = 323,013,780,864.63/647,805.51
  6. Step 6: Final answer
    x = 498,627.71

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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.