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Finding the Fourth Proportional to 641,959.25, 885,892.86 and 355,473.18

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Solution

The fourth proportional to 641,959.25, 885,892.86 and 355,473.18 is: 490,546.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,959.25 : 885,892.86 = 355,473.18 : x
  2. Step 2: Convert to fraction form
    641,959.25/885,892.86 = 355,473.18/x
  3. Step 3: Cross multiply
    641,959.25x = 885,892.86 × 355,473.18
  4. Step 4: Simplify right side
    641,959.25x = 314,911,152,083.50
  5. Step 5: Solve for x
    x = 314,911,152,083.50/641,959.25
  6. Step 6: Final answer
    x = 490,546.95

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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.