Home / 1,389,102.15-2,083,806.36-442,252.65

Finding the Fourth Proportional to 1,389,102.15, 2,083,806.36 and 442,252.65

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Solution

The fourth proportional to 1,389,102.15, 2,083,806.36 and 442,252.65 is: 663,427.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,102.15 : 2,083,806.36 = 442,252.65 : x
  2. Step 2: Convert to fraction form
    1,389,102.15/2,083,806.36 = 442,252.65/x
  3. Step 3: Cross multiply
    1,389,102.15x = 2,083,806.36 × 442,252.65
  4. Step 4: Simplify right side
    1,389,102.15x = 921,568,884,796.85
  5. Step 5: Solve for x
    x = 921,568,884,796.85/1,389,102.15
  6. Step 6: Final answer
    x = 663,427.73

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Double scale
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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.