Home / 1,638,291.92-2,260,568.64-912,980.48

Finding the Fourth Proportional to 1,638,291.92, 2,260,568.64 and 912,980.48

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Solution

The fourth proportional to 1,638,291.92, 2,260,568.64 and 912,980.48 is: 1,259,760.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638,291.92 : 2,260,568.64 = 912,980.48 : x
  2. Step 2: Convert to fraction form
    1,638,291.92/2,260,568.64 = 912,980.48/x
  3. Step 3: Cross multiply
    1,638,291.92x = 2,260,568.64 × 912,980.48
  4. Step 4: Simplify right side
    1,638,291.92x = 2,063,855,042,020.15
  5. Step 5: Solve for x
    x = 2,063,855,042,020.15/1,638,291.92
  6. Step 6: Final answer
    x = 1,259,760.25

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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.