Home / 1,219,635.45-1,831,128.93-620,998.86

Finding the Fourth Proportional to 1,219,635.45, 1,831,128.93 and 620,998.86

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Solution

The fourth proportional to 1,219,635.45, 1,831,128.93 and 620,998.86 is: 932,351.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219,635.45 : 1,831,128.93 = 620,998.86 : x
  2. Step 2: Convert to fraction form
    1,219,635.45/1,831,128.93 = 620,998.86/x
  3. Step 3: Cross multiply
    1,219,635.45x = 1,831,128.93 × 620,998.86
  4. Step 4: Simplify right side
    1,219,635.45x = 1,137,128,978,043.02
  5. Step 5: Solve for x
    x = 1,137,128,978,043.02/1,219,635.45
  6. Step 6: Final answer
    x = 932,351.53

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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.