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Finding the Fourth Proportional to 520,884.72, 785,231.22 and 486,164.61

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Solution

The fourth proportional to 520,884.72, 785,231.22 and 486,164.61 is: 732,890.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,884.72 : 785,231.22 = 486,164.61 : x
  2. Step 2: Convert to fraction form
    520,884.72/785,231.22 = 486,164.61/x
  3. Step 3: Cross multiply
    520,884.72x = 785,231.22 × 486,164.61
  4. Step 4: Simplify right side
    520,884.72x = 381,751,629,831.12
  5. Step 5: Solve for x
    x = 381,751,629,831.12/520,884.72
  6. Step 6: Final answer
    x = 732,890.82

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.