Home / 1,289,388.78-1,779,321.33-716,414.22

Finding the Fourth Proportional to 1,289,388.78, 1,779,321.33 and 716,414.22

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Solution

The fourth proportional to 1,289,388.78, 1,779,321.33 and 716,414.22 is: 988,632.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,388.78 : 1,779,321.33 = 716,414.22 : x
  2. Step 2: Convert to fraction form
    1,289,388.78/1,779,321.33 = 716,414.22/x
  3. Step 3: Cross multiply
    1,289,388.78x = 1,779,321.33 × 716,414.22
  4. Step 4: Simplify right side
    1,289,388.78x = 1,274,731,102,761.31
  5. Step 5: Solve for x
    x = 1,274,731,102,761.31/1,289,388.78
  6. Step 6: Final answer
    x = 988,632.07

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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.