Home / 1,311,515.06-1,809,818.60-722,698.54

Finding the Fourth Proportional to 1,311,515.06, 1,809,818.60 and 722,698.54

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Solution

The fourth proportional to 1,311,515.06, 1,809,818.60 and 722,698.54 is: 997,284.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,515.06 : 1,809,818.60 = 722,698.54 : x
  2. Step 2: Convert to fraction form
    1,311,515.06/1,809,818.60 = 722,698.54/x
  3. Step 3: Cross multiply
    1,311,515.06x = 1,809,818.60 × 722,698.54
  4. Step 4: Simplify right side
    1,311,515.06x = 1,307,953,251,746.80
  5. Step 5: Solve for x
    x = 1,307,953,251,746.80/1,311,515.06
  6. Step 6: Final answer
    x = 997,284.21

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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.