Home / 919,999.05-1,378,850.40-470,898.60

Finding the Fourth Proportional to 919,999.05, 1,378,850.40 and 470,898.60

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Solution

The fourth proportional to 919,999.05, 1,378,850.40 and 470,898.60 is: 705,760.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,999.05 : 1,378,850.40 = 470,898.60 : x
  2. Step 2: Convert to fraction form
    919,999.05/1,378,850.40 = 470,898.60/x
  3. Step 3: Cross multiply
    919,999.05x = 1,378,850.40 × 470,898.60
  4. Step 4: Simplify right side
    919,999.05x = 649,298,722,969.44
  5. Step 5: Solve for x
    x = 649,298,722,969.44/919,999.05
  6. Step 6: Final answer
    x = 705,760.21

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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.