Home / 1,289,821.46-1,779,940.78-716,849.33

Finding the Fourth Proportional to 1,289,821.46, 1,779,940.78 and 716,849.33

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Solution

The fourth proportional to 1,289,821.46, 1,779,940.78 and 716,849.33 is: 989,244.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,821.46 : 1,779,940.78 = 716,849.33 : x
  2. Step 2: Convert to fraction form
    1,289,821.46/1,779,940.78 = 716,849.33/x
  3. Step 3: Cross multiply
    1,289,821.46x = 1,779,940.78 × 716,849.33
  4. Step 4: Simplify right side
    1,289,821.46x = 1,275,949,344,890.85
  5. Step 5: Solve for x
    x = 1,275,949,344,890.85/1,289,821.46
  6. Step 6: Final answer
    x = 989,244.94

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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.