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Finding the Fourth Proportional to 641,282.08, 884,995.32 and 354,797.50

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Solution

The fourth proportional to 641,282.08, 884,995.32 and 354,797.50 is: 489,634.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,282.08 : 884,995.32 = 354,797.50 : x
  2. Step 2: Convert to fraction form
    641,282.08/884,995.32 = 354,797.50/x
  3. Step 3: Cross multiply
    641,282.08x = 884,995.32 × 354,797.50
  4. Step 4: Simplify right side
    641,282.08x = 313,994,127,047.70
  5. Step 5: Solve for x
    x = 313,994,127,047.70/641,282.08
  6. Step 6: Final answer
    x = 489,634.96

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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.