Home / 1,290,257.75-1,780,601.33-709,525.15

Finding the Fourth Proportional to 1,290,257.75, 1,780,601.33 and 709,525.15

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Solution

The fourth proportional to 1,290,257.75, 1,780,601.33 and 709,525.15 is: 979,169.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,257.75 : 1,780,601.33 = 709,525.15 : x
  2. Step 2: Convert to fraction form
    1,290,257.75/1,780,601.33 = 709,525.15/x
  3. Step 3: Cross multiply
    1,290,257.75x = 1,780,601.33 × 709,525.15
  4. Step 4: Simplify right side
    1,290,257.75x = 1,263,381,425,758.45
  5. Step 5: Solve for x
    x = 1,263,381,425,758.45/1,290,257.75
  6. Step 6: Final answer
    x = 979,169.80

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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.