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Finding the Fourth Proportional to 686,167.03, 946,940.61 and 380,242.72

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Solution

The fourth proportional to 686,167.03, 946,940.61 and 380,242.72 is: 524,751.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,167.03 : 946,940.61 = 380,242.72 : x
  2. Step 2: Convert to fraction form
    686,167.03/946,940.61 = 380,242.72/x
  3. Step 3: Cross multiply
    686,167.03x = 946,940.61 × 380,242.72
  4. Step 4: Simplify right side
    686,167.03x = 360,067,266,588.94
  5. Step 5: Solve for x
    x = 360,067,266,588.94/686,167.03
  6. Step 6: Final answer
    x = 524,751.63

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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.