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Finding the Fourth Proportional to 662,725.56, 995,584.80 and 393,030.60

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Solution

The fourth proportional to 662,725.56, 995,584.80 and 393,030.60 is: 590,433.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,725.56 : 995,584.80 = 393,030.60 : x
  2. Step 2: Convert to fraction form
    662,725.56/995,584.80 = 393,030.60/x
  3. Step 3: Cross multiply
    662,725.56x = 995,584.80 × 393,030.60
  4. Step 4: Simplify right side
    662,725.56x = 391,295,294,119.35
  5. Step 5: Solve for x
    x = 391,295,294,119.35/662,725.56
  6. Step 6: Final answer
    x = 590,433.38

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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.