Home / 664,786.32-916,300.44-470,945.22

Finding the Fourth Proportional to 664,786.32, 916,300.44 and 470,945.22

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Solution

The fourth proportional to 664,786.32, 916,300.44 and 470,945.22 is: 649,121.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,786.32 : 916,300.44 = 470,945.22 : x
  2. Step 2: Convert to fraction form
    664,786.32/916,300.44 = 470,945.22/x
  3. Step 3: Cross multiply
    664,786.32x = 916,300.44 × 470,945.22
  4. Step 4: Simplify right side
    664,786.32x = 431,527,312,301.90
  5. Step 5: Solve for x
    x = 431,527,312,301.90/664,786.32
  6. Step 6: Final answer
    x = 649,121.83

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Double scale
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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.