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Finding the Fourth Proportional to 624,869.69, 862,322.90 and 352,940.81

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Solution

The fourth proportional to 624,869.69, 862,322.90 and 352,940.81 is: 487,059.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,869.69 : 862,322.90 = 352,940.81 : x
  2. Step 2: Convert to fraction form
    624,869.69/862,322.90 = 352,940.81/x
  3. Step 3: Cross multiply
    624,869.69x = 862,322.90 × 352,940.81
  4. Step 4: Simplify right side
    624,869.69x = 304,348,936,731.23
  5. Step 5: Solve for x
    x = 304,348,936,731.23/624,869.69
  6. Step 6: Final answer
    x = 487,059.85

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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.