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Finding the Fourth Proportional to 454,636, 627,397.72 and 253,432

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Solution

The fourth proportional to 454,636, 627,397.72 and 253,432 is: 349,736.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,636 : 627,397.72 = 253,432 : x
  2. Step 2: Convert to fraction form
    454,636/627,397.72 = 253,432/x
  3. Step 3: Cross multiply
    454,636x = 627,397.72 × 253,432
  4. Step 4: Simplify right side
    454,636x = 159,002,658,975.04
  5. Step 5: Solve for x
    x = 159,002,658,975.04/454,636
  6. Step 6: Final answer
    x = 349,736.18

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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.