Home / 863,642.97-1,295,183.78-287,111.50

Finding the Fourth Proportional to 863,642.97, 1,295,183.78 and 287,111.50

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Solution

The fourth proportional to 863,642.97, 1,295,183.78 and 287,111.50 is: 430,573.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,642.97 : 1,295,183.78 = 287,111.50 : x
  2. Step 2: Convert to fraction form
    863,642.97/1,295,183.78 = 287,111.50/x
  3. Step 3: Cross multiply
    863,642.97x = 1,295,183.78 × 287,111.50
  4. Step 4: Simplify right side
    863,642.97x = 371,862,153,177.95
  5. Step 5: Solve for x
    x = 371,862,153,177.95/863,642.97
  6. Step 6: Final answer
    x = 430,573.94

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Double scale
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1.5x scale

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.