Home / 750,679.63-1,036,012.40-428,438.54

Finding the Fourth Proportional to 750,679.63, 1,036,012.40 and 428,438.54

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Solution

The fourth proportional to 750,679.63, 1,036,012.40 and 428,438.54 is: 591,287.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    750,679.63 : 1,036,012.40 = 428,438.54 : x
  2. Step 2: Convert to fraction form
    750,679.63/1,036,012.40 = 428,438.54/x
  3. Step 3: Cross multiply
    750,679.63x = 1,036,012.40 × 428,438.54
  4. Step 4: Simplify right side
    750,679.63x = 443,867,640,077.90
  5. Step 5: Solve for x
    x = 443,867,640,077.90/750,679.63
  6. Step 6: Final answer
    x = 591,287.71

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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.