Home / 285,467,532.96-428,219,028.72-81,011,609.76

Finding the Fourth Proportional to 285,467,532.96, 428,219,028.72 and 81,011,609.76

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Solution

The fourth proportional to 285,467,532.96, 428,219,028.72 and 81,011,609.76 is: 121,522,445.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,467,532.96 : 428,219,028.72 = 81,011,609.76 : x
  2. Step 2: Convert to fraction form
    285,467,532.96/428,219,028.72 = 81,011,609.76/x
  3. Step 3: Cross multiply
    285,467,532.96x = 428,219,028.72 × 81,011,609.76
  4. Step 4: Simplify right side
    285,467,532.96x = 34,690,712,846,470,876
  5. Step 5: Solve for x
    x = 34,690,712,846,470,876/285,467,532.96
  6. Step 6: Final answer
    x = 121,522,445.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.