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Finding the Fourth Proportional to 647,751.94, 893,898.87 and 361,290.49

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Solution

The fourth proportional to 647,751.94, 893,898.87 and 361,290.49 is: 498,581.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,751.94 : 893,898.87 = 361,290.49 : x
  2. Step 2: Convert to fraction form
    647,751.94/893,898.87 = 361,290.49/x
  3. Step 3: Cross multiply
    647,751.94x = 893,898.87 × 361,290.49
  4. Step 4: Simplify right side
    647,751.94x = 322,957,160,752.75
  5. Step 5: Solve for x
    x = 322,957,160,752.75/647,751.94
  6. Step 6: Final answer
    x = 498,581.54

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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.