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Finding the Fourth Proportional to 647,789.40, 893,950.60 and 361,328.04

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Solution

The fourth proportional to 647,789.40, 893,950.60 and 361,328.04 is: 498,633.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,789.40 : 893,950.60 = 361,328.04 : x
  2. Step 2: Convert to fraction form
    647,789.40/893,950.60 = 361,328.04/x
  3. Step 3: Cross multiply
    647,789.40x = 893,950.60 × 361,328.04
  4. Step 4: Simplify right side
    647,789.40x = 323,009,418,154.82
  5. Step 5: Solve for x
    x = 323,009,418,154.82/647,789.40
  6. Step 6: Final answer
    x = 498,633.38

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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.