Home / 687,171.88-948,295.38-385,372.36

Finding the Fourth Proportional to 687,171.88, 948,295.38 and 385,372.36

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Solution

The fourth proportional to 687,171.88, 948,295.38 and 385,372.36 is: 531,812.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,171.88 : 948,295.38 = 385,372.36 : x
  2. Step 2: Convert to fraction form
    687,171.88/948,295.38 = 385,372.36/x
  3. Step 3: Cross multiply
    687,171.88x = 948,295.38 × 385,372.36
  4. Step 4: Simplify right side
    687,171.88x = 365,446,828,567.70
  5. Step 5: Solve for x
    x = 365,446,828,567.70/687,171.88
  6. Step 6: Final answer
    x = 531,812.84

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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.