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Finding the Fourth Proportional to 455,969.73, 628,911.88 and 320,034

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Solution

The fourth proportional to 455,969.73, 628,911.88 and 320,034 is: 441,417.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,969.73 : 628,911.88 = 320,034 : x
  2. Step 2: Convert to fraction form
    455,969.73/628,911.88 = 320,034/x
  3. Step 3: Cross multiply
    455,969.73x = 628,911.88 × 320,034
  4. Step 4: Simplify right side
    455,969.73x = 201,273,183,803.84
  5. Step 5: Solve for x
    x = 201,273,183,803.84/455,969.73
  6. Step 6: Final answer
    x = 441,417.86

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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.