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Finding the Fourth Proportional to 866,438.79, 1,299,676.01 and 267,400.32

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Solution

The fourth proportional to 866,438.79, 1,299,676.01 and 267,400.32 is: 401,105.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,438.79 : 1,299,676.01 = 267,400.32 : x
  2. Step 2: Convert to fraction form
    866,438.79/1,299,676.01 = 267,400.32/x
  3. Step 3: Cross multiply
    866,438.79x = 1,299,676.01 × 267,400.32
  4. Step 4: Simplify right side
    866,438.79x = 347,533,779,633.32
  5. Step 5: Solve for x
    x = 347,533,779,633.32/866,438.79
  6. Step 6: Final answer
    x = 401,105.98

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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.