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Finding the Fourth Proportional to 624,020.36, 861,148.26 and 352,145.88

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Solution

The fourth proportional to 624,020.36, 861,148.26 and 352,145.88 is: 485,961.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,020.36 : 861,148.26 = 352,145.88 : x
  2. Step 2: Convert to fraction form
    624,020.36/861,148.26 = 352,145.88/x
  3. Step 3: Cross multiply
    624,020.36x = 861,148.26 × 352,145.88
  4. Step 4: Simplify right side
    624,020.36x = 303,249,811,828.17
  5. Step 5: Solve for x
    x = 303,249,811,828.17/624,020.36
  6. Step 6: Final answer
    x = 485,961.41

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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.