Home / 919,105.60-1,379,695.20-545,339.20

Finding the Fourth Proportional to 919,105.60, 1,379,695.20 and 545,339.20

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Solution

The fourth proportional to 919,105.60, 1,379,695.20 and 545,339.20 is: 818,623.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,105.60 : 1,379,695.20 = 545,339.20 : x
  2. Step 2: Convert to fraction form
    919,105.60/1,379,695.20 = 545,339.20/x
  3. Step 3: Cross multiply
    919,105.60x = 1,379,695.20 × 545,339.20
  4. Step 4: Simplify right side
    919,105.60x = 752,401,876,611.84
  5. Step 5: Solve for x
    x = 752,401,876,611.84/919,105.60
  6. Step 6: Final answer
    x = 818,623.97

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1.5x scale

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.