Home / 1,294,841.56-1,787,112.12-811,820.68

Finding the Fourth Proportional to 1,294,841.56, 1,787,112.12 and 811,820.68

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Solution

The fourth proportional to 1,294,841.56, 1,787,112.12 and 811,820.68 is: 1,120,457.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,294,841.56 : 1,787,112.12 = 811,820.68 : x
  2. Step 2: Convert to fraction form
    1,294,841.56/1,787,112.12 = 811,820.68/x
  3. Step 3: Cross multiply
    1,294,841.56x = 1,787,112.12 × 811,820.68
  4. Step 4: Simplify right side
    1,294,841.56x = 1,450,814,576,494.64
  5. Step 5: Solve for x
    x = 1,450,814,576,494.64/1,294,841.56
  6. Step 6: Final answer
    x = 1,120,457.22

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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.