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Finding the Fourth Proportional to 713,940.46, 985,232.10 and 387,252.64

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Solution

The fourth proportional to 713,940.46, 985,232.10 and 387,252.64 is: 534,405.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,940.46 : 985,232.10 = 387,252.64 : x
  2. Step 2: Convert to fraction form
    713,940.46/985,232.10 = 387,252.64/x
  3. Step 3: Cross multiply
    713,940.46x = 985,232.10 × 387,252.64
  4. Step 4: Simplify right side
    713,940.46x = 381,533,731,737.74
  5. Step 5: Solve for x
    x = 381,533,731,737.74/713,940.46
  6. Step 6: Final answer
    x = 534,405.53

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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.