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Finding the Fourth Proportional to 454,634, 627,394.96 and 253,430

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Solution

The fourth proportional to 454,634, 627,394.96 and 253,430 is: 349,733.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,634 : 627,394.96 = 253,430 : x
  2. Step 2: Convert to fraction form
    454,634/627,394.96 = 253,430/x
  3. Step 3: Cross multiply
    454,634x = 627,394.96 × 253,430
  4. Step 4: Simplify right side
    454,634x = 159,000,704,712.80
  5. Step 5: Solve for x
    x = 159,000,704,712.80/454,634
  6. Step 6: Final answer
    x = 349,733.42

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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.