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Finding the Fourth Proportional to 665,140.60, 997,054.80 and 327,905.20

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Solution

The fourth proportional to 665,140.60, 997,054.80 and 327,905.20 is: 491,534.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,140.60 : 997,054.80 = 327,905.20 : x
  2. Step 2: Convert to fraction form
    665,140.60/997,054.80 = 327,905.20/x
  3. Step 3: Cross multiply
    665,140.60x = 997,054.80 × 327,905.20
  4. Step 4: Simplify right side
    665,140.60x = 326,939,453,604.96
  5. Step 5: Solve for x
    x = 326,939,453,604.96/665,140.60
  6. Step 6: Final answer
    x = 491,534.35

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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.