Home / 805,634.90-1,111,750.75-443,057.64

Finding the Fourth Proportional to 805,634.90, 1,111,750.75 and 443,057.64

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Solution

The fourth proportional to 805,634.90, 1,111,750.75 and 443,057.64 is: 611,405.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,634.90 : 1,111,750.75 = 443,057.64 : x
  2. Step 2: Convert to fraction form
    805,634.90/1,111,750.75 = 443,057.64/x
  3. Step 3: Cross multiply
    805,634.90x = 1,111,750.75 × 443,057.64
  4. Step 4: Simplify right side
    805,634.90x = 492,569,663,563.23
  5. Step 5: Solve for x
    x = 492,569,663,563.23/805,634.90
  6. Step 6: Final answer
    x = 611,405.57

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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.