Home / 528,428,139.90-792,642,209.85-419,589,023.10

Finding the Fourth Proportional to 528,428,139.90, 792,642,209.85 and 419,589,023.10

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Solution

The fourth proportional to 528,428,139.90, 792,642,209.85 and 419,589,023.10 is: 629,383,534.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,428,139.90 : 792,642,209.85 = 419,589,023.10 : x
  2. Step 2: Convert to fraction form
    528,428,139.90/792,642,209.85 = 419,589,023.10/x
  3. Step 3: Cross multiply
    528,428,139.90x = 792,642,209.85 × 419,589,023.10
  4. Step 4: Simplify right side
    528,428,139.90x = 332,583,970,498,786,752
  5. Step 5: Solve for x
    x = 332,583,970,498,786,752/528,428,139.90
  6. Step 6: Final answer
    x = 629,383,534.65

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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.