Home / 620,697,868.38-931,118,844.78-206,211,679.74

Finding the Fourth Proportional to 620,697,868.38, 931,118,844.78 and 206,211,679.74

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Solution

The fourth proportional to 620,697,868.38, 931,118,844.78 and 206,211,679.74 is: 309,341,453.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,697,868.38 : 931,118,844.78 = 206,211,679.74 : x
  2. Step 2: Convert to fraction form
    620,697,868.38/931,118,844.78 = 206,211,679.74/x
  3. Step 3: Cross multiply
    620,697,868.38x = 931,118,844.78 × 206,211,679.74
  4. Step 4: Simplify right side
    620,697,868.38x = 192,007,581,019,652,128
  5. Step 5: Solve for x
    x = 192,007,581,019,652,128/620,697,868.38
  6. Step 6: Final answer
    x = 309,341,453.87

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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.