Home / 621,035,679.47-931,454,797.99-206,478,019.67

Finding the Fourth Proportional to 621,035,679.47, 931,454,797.99 and 206,478,019.67

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Solution

The fourth proportional to 621,035,679.47, 931,454,797.99 and 206,478,019.67 is: 309,684,207.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,035,679.47 : 931,454,797.99 = 206,478,019.67 : x
  2. Step 2: Convert to fraction form
    621,035,679.47/931,454,797.99 = 206,478,019.67/x
  3. Step 3: Cross multiply
    621,035,679.47x = 931,454,797.99 × 206,478,019.67
  4. Step 4: Simplify right side
    621,035,679.47x = 192,324,942,101,095,072
  5. Step 5: Solve for x
    x = 192,324,942,101,095,072/621,035,679.47
  6. Step 6: Final answer
    x = 309,684,207.30

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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.