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Finding the Fourth Proportional to 389,891.84, 583,507.08 and 326,783.22

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Solution

The fourth proportional to 389,891.84, 583,507.08 and 326,783.22 is: 489,059.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,891.84 : 583,507.08 = 326,783.22 : x
  2. Step 2: Convert to fraction form
    389,891.84/583,507.08 = 326,783.22/x
  3. Step 3: Cross multiply
    389,891.84x = 583,507.08 × 326,783.22
  4. Step 4: Simplify right side
    389,891.84x = 190,680,322,495.20
  5. Step 5: Solve for x
    x = 190,680,322,495.20/389,891.84
  6. Step 6: Final answer
    x = 489,059.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.