Home / 665,060.20-917,555.46-378,508.60

Finding the Fourth Proportional to 665,060.20, 917,555.46 and 378,508.60

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Solution

The fourth proportional to 665,060.20, 917,555.46 and 378,508.60 is: 522,212.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,060.20 : 917,555.46 = 378,508.60 : x
  2. Step 2: Convert to fraction form
    665,060.20/917,555.46 = 378,508.60/x
  3. Step 3: Cross multiply
    665,060.20x = 917,555.46 × 378,508.60
  4. Step 4: Simplify right side
    665,060.20x = 347,302,632,586.96
  5. Step 5: Solve for x
    x = 347,302,632,586.96/665,060.20
  6. Step 6: Final answer
    x = 522,212.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.