Home / 911,028,111.20-1,366,542,166.80-419,740,431.20

Finding the Fourth Proportional to 911,028,111.20, 1,366,542,166.80 and 419,740,431.20

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Solution

The fourth proportional to 911,028,111.20, 1,366,542,166.80 and 419,740,431.20 is: 629,610,646.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,028,111.20 : 1,366,542,166.80 = 419,740,431.20 : x
  2. Step 2: Convert to fraction form
    911,028,111.20/1,366,542,166.80 = 419,740,431.20/x
  3. Step 3: Cross multiply
    911,028,111.20x = 1,366,542,166.80 × 419,740,431.20
  4. Step 4: Simplify right side
    911,028,111.20x = 573,592,998,345,614,272
  5. Step 5: Solve for x
    x = 573,592,998,345,614,272/911,028,111.20
  6. Step 6: Final answer
    x = 629,610,646.80

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1.5x scale

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.