Home / 1,219,636.45-1,831,130.43-620,999.86

Finding the Fourth Proportional to 1,219,636.45, 1,831,130.43 and 620,999.86

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Solution

The fourth proportional to 1,219,636.45, 1,831,130.43 and 620,999.86 is: 932,353.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219,636.45 : 1,831,130.43 = 620,999.86 : x
  2. Step 2: Convert to fraction form
    1,219,636.45/1,831,130.43 = 620,999.86/x
  3. Step 3: Cross multiply
    1,219,636.45x = 1,831,130.43 × 620,999.86
  4. Step 4: Simplify right side
    1,219,636.45x = 1,137,131,740,671.74
  5. Step 5: Solve for x
    x = 1,137,131,740,671.74/1,219,636.45
  6. Step 6: Final answer
    x = 932,353.03

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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.