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Finding the Fourth Proportional to 641,244, 884,840.28 and 354,725.28

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Solution

The fourth proportional to 641,244, 884,840.28 and 354,725.28 is: 489,478.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,244 : 884,840.28 = 354,725.28 : x
  2. Step 2: Convert to fraction form
    641,244/884,840.28 = 354,725.28/x
  3. Step 3: Cross multiply
    641,244x = 884,840.28 × 354,725.28
  4. Step 4: Simplify right side
    641,244x = 313,875,216,078.28
  5. Step 5: Solve for x
    x = 313,875,216,078.28/641,244
  6. Step 6: Final answer
    x = 489,478.60

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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.