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Finding the Fourth Proportional to 664,672.40, 997,008.60 and 265,374.80

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Solution

The fourth proportional to 664,672.40, 997,008.60 and 265,374.80 is: 398,062.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,672.40 : 997,008.60 = 265,374.80 : x
  2. Step 2: Convert to fraction form
    664,672.40/997,008.60 = 265,374.80/x
  3. Step 3: Cross multiply
    664,672.40x = 997,008.60 × 265,374.80
  4. Step 4: Simplify right side
    664,672.40x = 264,580,957,823.28
  5. Step 5: Solve for x
    x = 264,580,957,823.28/664,672.40
  6. Step 6: Final answer
    x = 398,062.20

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Similar ratio
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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.