Home / 861,372.54-1,290,636.99-500,530.41

Finding the Fourth Proportional to 861,372.54, 1,290,636.99 and 500,530.41

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Solution

The fourth proportional to 861,372.54, 1,290,636.99 and 500,530.41 is: 749,969.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,372.54 : 1,290,636.99 = 500,530.41 : x
  2. Step 2: Convert to fraction form
    861,372.54/1,290,636.99 = 500,530.41/x
  3. Step 3: Cross multiply
    861,372.54x = 1,290,636.99 × 500,530.41
  4. Step 4: Simplify right side
    861,372.54x = 646,003,061,765.87
  5. Step 5: Solve for x
    x = 646,003,061,765.87/861,372.54
  6. Step 6: Final answer
    x = 749,969.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.