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Finding the Fourth Proportional to 426,372.59, 639,893.01 and 297,450.46

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Solution

The fourth proportional to 426,372.59, 639,893.01 and 297,450.46 is: 446,408.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,372.59 : 639,893.01 = 297,450.46 : x
  2. Step 2: Convert to fraction form
    426,372.59/639,893.01 = 297,450.46/x
  3. Step 3: Cross multiply
    426,372.59x = 639,893.01 × 297,450.46
  4. Step 4: Simplify right side
    426,372.59x = 190,336,472,090.59
  5. Step 5: Solve for x
    x = 190,336,472,090.59/426,372.59
  6. Step 6: Final answer
    x = 446,408.79

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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.