Home / 1,290,204.80-1,780,504.80-709,452.80

Finding the Fourth Proportional to 1,290,204.80, 1,780,504.80 and 709,452.80

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Solution

The fourth proportional to 1,290,204.80, 1,780,504.80 and 709,452.80 is: 979,057.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,204.80 : 1,780,504.80 = 709,452.80 : x
  2. Step 2: Convert to fraction form
    1,290,204.80/1,780,504.80 = 709,452.80/x
  3. Step 3: Cross multiply
    1,290,204.80x = 1,780,504.80 × 709,452.80
  4. Step 4: Simplify right side
    1,290,204.80x = 1,263,184,115,773.44
  5. Step 5: Solve for x
    x = 1,263,184,115,773.44/1,290,204.80
  6. Step 6: Final answer
    x = 979,057.06

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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.