Home / 1,190,615.12-1,786,168.72-391,944.60

Finding the Fourth Proportional to 1,190,615.12, 1,786,168.72 and 391,944.60

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Solution

The fourth proportional to 1,190,615.12, 1,786,168.72 and 391,944.60 is: 587,997.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190,615.12 : 1,786,168.72 = 391,944.60 : x
  2. Step 2: Convert to fraction form
    1,190,615.12/1,786,168.72 = 391,944.60/x
  3. Step 3: Cross multiply
    1,190,615.12x = 1,786,168.72 × 391,944.60
  4. Step 4: Simplify right side
    1,190,615.12x = 700,079,184,492.91
  5. Step 5: Solve for x
    x = 700,079,184,492.91/1,190,615.12
  6. Step 6: Final answer
    x = 587,997.90

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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.