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Finding the Fourth Proportional to 668,637.57, 922,495.37 and 381,954.63

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Solution

The fourth proportional to 668,637.57, 922,495.37 and 381,954.63 is: 526,969.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,637.57 : 922,495.37 = 381,954.63 : x
  2. Step 2: Convert to fraction form
    668,637.57/922,495.37 = 381,954.63/x
  3. Step 3: Cross multiply
    668,637.57x = 922,495.37 × 381,954.63
  4. Step 4: Simplify right side
    668,637.57x = 352,351,375,815.29
  5. Step 5: Solve for x
    x = 352,351,375,815.29/668,637.57
  6. Step 6: Final answer
    x = 526,969.16

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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.