Home / 621,035,678.47-931,454,796.50-206,478,018.67

Finding the Fourth Proportional to 621,035,678.47, 931,454,796.50 and 206,478,018.67

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Solution

The fourth proportional to 621,035,678.47, 931,454,796.50 and 206,478,018.67 is: 309,684,205.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,035,678.47 : 931,454,796.50 = 206,478,018.67 : x
  2. Step 2: Convert to fraction form
    621,035,678.47/931,454,796.50 = 206,478,018.67/x
  3. Step 3: Cross multiply
    621,035,678.47x = 931,454,796.50 × 206,478,018.67
  4. Step 4: Simplify right side
    621,035,678.47x = 192,324,940,860,955,648
  5. Step 5: Solve for x
    x = 192,324,940,860,955,648/621,035,678.47
  6. Step 6: Final answer
    x = 309,684,205.80

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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.