Home / 1,219,676.12-1,831,189.78-621,039.32

Finding the Fourth Proportional to 1,219,676.12, 1,831,189.78 and 621,039.32

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Solution

The fourth proportional to 1,219,676.12, 1,831,189.78 and 621,039.32 is: 932,412.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219,676.12 : 1,831,189.78 = 621,039.32 : x
  2. Step 2: Convert to fraction form
    1,219,676.12/1,831,189.78 = 621,039.32/x
  3. Step 3: Cross multiply
    1,219,676.12x = 1,831,189.78 × 621,039.32
  4. Step 4: Simplify right side
    1,219,676.12x = 1,137,240,855,762.15
  5. Step 5: Solve for x
    x = 1,137,240,855,762.15/1,219,676.12
  6. Step 6: Final answer
    x = 932,412.17

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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.