Home / 743,278.44-1,025,743.20-420,983.76

Finding the Fourth Proportional to 743,278.44, 1,025,743.20 and 420,983.76

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Solution

The fourth proportional to 743,278.44, 1,025,743.20 and 420,983.76 is: 580,968.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,278.44 : 1,025,743.20 = 420,983.76 : x
  2. Step 2: Convert to fraction form
    743,278.44/1,025,743.20 = 420,983.76/x
  3. Step 3: Cross multiply
    743,278.44x = 1,025,743.20 × 420,983.76
  4. Step 4: Simplify right side
    743,278.44x = 431,821,229,130.43
  5. Step 5: Solve for x
    x = 431,821,229,130.43/743,278.44
  6. Step 6: Final answer
    x = 580,968.32

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1.5x scale

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.