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Finding the Fourth Proportional to 641,862.44, 885,797.85 and 355,382.53

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Solution

The fourth proportional to 641,862.44, 885,797.85 and 355,382.53 is: 490,443.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,862.44 : 885,797.85 = 355,382.53 : x
  2. Step 2: Convert to fraction form
    641,862.44/885,797.85 = 355,382.53/x
  3. Step 3: Cross multiply
    641,862.44x = 885,797.85 × 355,382.53
  4. Step 4: Simplify right side
    641,862.44x = 314,797,076,572.57
  5. Step 5: Solve for x
    x = 314,797,076,572.57/641,862.44
  6. Step 6: Final answer
    x = 490,443.21

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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.