Home / 689,768,316.90-951,738,181.56-396,356,197.86

Finding the Fourth Proportional to 689,768,316.90, 951,738,181.56 and 396,356,197.86

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Solution

The fourth proportional to 689,768,316.90, 951,738,181.56 and 396,356,197.86 is: 546,889,901.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,768,316.90 : 951,738,181.56 = 396,356,197.86 : x
  2. Step 2: Convert to fraction form
    689,768,316.90/951,738,181.56 = 396,356,197.86/x
  3. Step 3: Cross multiply
    689,768,316.90x = 951,738,181.56 × 396,356,197.86
  4. Step 4: Simplify right side
    689,768,316.90x = 377,227,327,001,311,936
  5. Step 5: Solve for x
    x = 377,227,327,001,311,936/689,768,316.90
  6. Step 6: Final answer
    x = 546,889,901.67

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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.