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Finding the Fourth Proportional to 1,257,452.10, 1,731,978.45 and 966,507.39

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Solution

The fourth proportional to 1,257,452.10, 1,731,978.45 and 966,507.39 is: 1,331,239.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,257,452.10 : 1,731,978.45 = 966,507.39 : x
  2. Step 2: Convert to fraction form
    1,257,452.10/1,731,978.45 = 966,507.39/x
  3. Step 3: Cross multiply
    1,257,452.10x = 1,731,978.45 × 966,507.39
  4. Step 4: Simplify right side
    1,257,452.10x = 1,673,969,971,245.75
  5. Step 5: Solve for x
    x = 1,673,969,971,245.75/1,257,452.10
  6. Step 6: Final answer
    x = 1,331,239.55

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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.