Home / 680,629.38-1,020,944.37-280,830.72

Finding the Fourth Proportional to 680,629.38, 1,020,944.37 and 280,830.72

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Solution

The fourth proportional to 680,629.38, 1,020,944.37 and 280,830.72 is: 421,246.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,629.38 : 1,020,944.37 = 280,830.72 : x
  2. Step 2: Convert to fraction form
    680,629.38/1,020,944.37 = 280,830.72/x
  3. Step 3: Cross multiply
    680,629.38x = 1,020,944.37 × 280,830.72
  4. Step 4: Simplify right side
    680,629.38x = 286,712,542,507.05
  5. Step 5: Solve for x
    x = 286,712,542,507.05/680,629.38
  6. Step 6: Final answer
    x = 421,246.20

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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.