Home / 1,290,932.70-1,781,550.21-717,960.57

Finding the Fourth Proportional to 1,290,932.70, 1,781,550.21 and 717,960.57

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Solution

The fourth proportional to 1,290,932.70, 1,781,550.21 and 717,960.57 is: 990,820.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,932.70 : 1,781,550.21 = 717,960.57 : x
  2. Step 2: Convert to fraction form
    1,290,932.70/1,781,550.21 = 717,960.57/x
  3. Step 3: Cross multiply
    1,290,932.70x = 1,781,550.21 × 717,960.57
  4. Step 4: Simplify right side
    1,290,932.70x = 1,279,082,804,255.22
  5. Step 5: Solve for x
    x = 1,279,082,804,255.22/1,290,932.70
  6. Step 6: Final answer
    x = 990,820.67

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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.