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Finding the Fourth Proportional to 647,826.66, 894,018.06 and 361,402.56

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Solution

The fourth proportional to 647,826.66, 894,018.06 and 361,402.56 is: 498,745.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,826.66 : 894,018.06 = 361,402.56 : x
  2. Step 2: Convert to fraction form
    647,826.66/894,018.06 = 361,402.56/x
  3. Step 3: Cross multiply
    647,826.66x = 894,018.06 × 361,402.56
  4. Step 4: Simplify right side
    647,826.66x = 323,100,415,570.23
  5. Step 5: Solve for x
    x = 323,100,415,570.23/647,826.66
  6. Step 6: Final answer
    x = 498,745.17

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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.