Home / 486,474.56-671,157.60-285,231.68

Finding the Fourth Proportional to 486,474.56, 671,157.60 and 285,231.68

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Solution

The fourth proportional to 486,474.56, 671,157.60 and 285,231.68 is: 393,515.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,474.56 : 671,157.60 = 285,231.68 : x
  2. Step 2: Convert to fraction form
    486,474.56/671,157.60 = 285,231.68/x
  3. Step 3: Cross multiply
    486,474.56x = 671,157.60 × 285,231.68
  4. Step 4: Simplify right side
    486,474.56x = 191,435,409,792.77
  5. Step 5: Solve for x
    x = 191,435,409,792.77/486,474.56
  6. Step 6: Final answer
    x = 393,515.77

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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.