Home / 809,342.60-1,211,249.10-709,809.80

Finding the Fourth Proportional to 809,342.60, 1,211,249.10 and 709,809.80

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Solution

The fourth proportional to 809,342.60, 1,211,249.10 and 709,809.80 is: 1,062,289.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,342.60 : 1,211,249.10 = 709,809.80 : x
  2. Step 2: Convert to fraction form
    809,342.60/1,211,249.10 = 709,809.80/x
  3. Step 3: Cross multiply
    809,342.60x = 1,211,249.10 × 709,809.80
  4. Step 4: Simplify right side
    809,342.60x = 859,756,481,421.18
  5. Step 5: Solve for x
    x = 859,756,481,421.18/809,342.60
  6. Step 6: Final answer
    x = 1,062,289.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.