Home / 488,487.46-674,441.67-305,005.40

Finding the Fourth Proportional to 488,487.46, 674,441.67 and 305,005.40

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Solution

The fourth proportional to 488,487.46, 674,441.67 and 305,005.40 is: 421,112.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,487.46 : 674,441.67 = 305,005.40 : x
  2. Step 2: Convert to fraction form
    488,487.46/674,441.67 = 305,005.40/x
  3. Step 3: Cross multiply
    488,487.46x = 674,441.67 × 305,005.40
  4. Step 4: Simplify right side
    488,487.46x = 205,708,351,335.02
  5. Step 5: Solve for x
    x = 205,708,351,335.02/488,487.46
  6. Step 6: Final answer
    x = 421,112.86

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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.