Home / 1,207,389.60-1,809,010.80-786,448.80

Finding the Fourth Proportional to 1,207,389.60, 1,809,010.80 and 786,448.80

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Solution

The fourth proportional to 1,207,389.60, 1,809,010.80 and 786,448.80 is: 1,178,322.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207,389.60 : 1,809,010.80 = 786,448.80 : x
  2. Step 2: Convert to fraction form
    1,207,389.60/1,809,010.80 = 786,448.80/x
  3. Step 3: Cross multiply
    1,207,389.60x = 1,809,010.80 × 786,448.80
  4. Step 4: Simplify right side
    1,207,389.60x = 1,422,694,372,847.04
  5. Step 5: Solve for x
    x = 1,422,694,372,847.04/1,207,389.60
  6. Step 6: Final answer
    x = 1,178,322.53

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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.