Home / 743,018.30-1,025,369.19-420,791.12

Finding the Fourth Proportional to 743,018.30, 1,025,369.19 and 420,791.12

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Solution

The fourth proportional to 743,018.30, 1,025,369.19 and 420,791.12 is: 580,693.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,018.30 : 1,025,369.19 = 420,791.12 : x
  2. Step 2: Convert to fraction form
    743,018.30/1,025,369.19 = 420,791.12/x
  3. Step 3: Cross multiply
    743,018.30x = 1,025,369.19 × 420,791.12
  4. Step 4: Simplify right side
    743,018.30x = 431,466,244,746.75
  5. Step 5: Solve for x
    x = 431,466,244,746.75/743,018.30
  6. Step 6: Final answer
    x = 580,693.97

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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.