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Finding the Fourth Proportional to 454,028.49, 625,904.82 and 317,639.88

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Solution

The fourth proportional to 454,028.49, 625,904.82 and 317,639.88 is: 437,885.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,028.49 : 625,904.82 = 317,639.88 : x
  2. Step 2: Convert to fraction form
    454,028.49/625,904.82 = 317,639.88/x
  3. Step 3: Cross multiply
    454,028.49x = 625,904.82 × 317,639.88
  4. Step 4: Simplify right side
    454,028.49x = 198,812,331,916.22
  5. Step 5: Solve for x
    x = 198,812,331,916.22/454,028.49
  6. Step 6: Final answer
    x = 437,885.15

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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.