Home / 831,837.72-1,147,989.20-469,129.24

Finding the Fourth Proportional to 831,837.72, 1,147,989.20 and 469,129.24

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Solution

The fourth proportional to 831,837.72, 1,147,989.20 and 469,129.24 is: 647,428.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,837.72 : 1,147,989.20 = 469,129.24 : x
  2. Step 2: Convert to fraction form
    831,837.72/1,147,989.20 = 469,129.24/x
  3. Step 3: Cross multiply
    831,837.72x = 1,147,989.20 × 469,129.24
  4. Step 4: Simplify right side
    831,837.72x = 538,555,295,184.26
  5. Step 5: Solve for x
    x = 538,555,295,184.26/831,837.72
  6. Step 6: Final answer
    x = 647,428.32

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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.