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Finding the Fourth Proportional to 647,790.68, 893,952.70 and 361,329.32

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Solution

The fourth proportional to 647,790.68, 893,952.70 and 361,329.32 is: 498,635.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,790.68 : 893,952.70 = 361,329.32 : x
  2. Step 2: Convert to fraction form
    647,790.68/893,952.70 = 361,329.32/x
  3. Step 3: Cross multiply
    647,790.68x = 893,952.70 × 361,329.32
  4. Step 4: Simplify right side
    647,790.68x = 323,011,321,203.16
  5. Step 5: Solve for x
    x = 323,011,321,203.16/647,790.68
  6. Step 6: Final answer
    x = 498,635.33

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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.