Home / 831,431.38-1,245,878.25-432,201.82

Finding the Fourth Proportional to 831,431.38, 1,245,878.25 and 432,201.82

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Solution

The fourth proportional to 831,431.38, 1,245,878.25 and 432,201.82 is: 647,643.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,431.38 : 1,245,878.25 = 432,201.82 : x
  2. Step 2: Convert to fraction form
    831,431.38/1,245,878.25 = 432,201.82/x
  3. Step 3: Cross multiply
    831,431.38x = 1,245,878.25 × 432,201.82
  4. Step 4: Simplify right side
    831,431.38x = 538,470,847,148.42
  5. Step 5: Solve for x
    x = 538,470,847,148.42/831,431.38
  6. Step 6: Final answer
    x = 647,643.16

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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.