Home / 821,104.80-1,230,620.40-727,792.80

Finding the Fourth Proportional to 821,104.80, 1,230,620.40 and 727,792.80

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Solution

The fourth proportional to 821,104.80, 1,230,620.40 and 727,792.80 is: 1,090,770.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,104.80 : 1,230,620.40 = 727,792.80 : x
  2. Step 2: Convert to fraction form
    821,104.80/1,230,620.40 = 727,792.80/x
  3. Step 3: Cross multiply
    821,104.80x = 1,230,620.40 × 727,792.80
  4. Step 4: Simplify right side
    821,104.80x = 895,636,666,653.12
  5. Step 5: Solve for x
    x = 895,636,666,653.12/821,104.80
  6. Step 6: Final answer
    x = 1,090,770.22

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1.5x scale

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.