Home / 1,188,383.68-1,782,211.20-430,134.40

Finding the Fourth Proportional to 1,188,383.68, 1,782,211.20 and 430,134.40

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Solution

The fourth proportional to 1,188,383.68, 1,782,211.20 and 430,134.40 is: 645,069.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,383.68 : 1,782,211.20 = 430,134.40 : x
  2. Step 2: Convert to fraction form
    1,188,383.68/1,782,211.20 = 430,134.40/x
  3. Step 3: Cross multiply
    1,188,383.68x = 1,782,211.20 × 430,134.40
  4. Step 4: Simplify right side
    1,188,383.68x = 766,590,345,185.28
  5. Step 5: Solve for x
    x = 766,590,345,185.28/1,188,383.68
  6. Step 6: Final answer
    x = 645,069.73

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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.