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Finding the Fourth Proportional to 641,054.49, 884,595.72 and 354,568.44

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Solution

The fourth proportional to 641,054.49, 884,595.72 and 354,568.44 is: 489,271.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,054.49 : 884,595.72 = 354,568.44 : x
  2. Step 2: Convert to fraction form
    641,054.49/884,595.72 = 354,568.44/x
  3. Step 3: Cross multiply
    641,054.49x = 884,595.72 × 354,568.44
  4. Step 4: Simplify right side
    641,054.49x = 313,649,724,471.08
  5. Step 5: Solve for x
    x = 313,649,724,471.08/641,054.49
  6. Step 6: Final answer
    x = 489,271.55

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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.