Home / 690,494,409.02-1,036,396,426.44-427,383,074.14

Finding the Fourth Proportional to 690,494,409.02, 1,036,396,426.44 and 427,383,074.14

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Solution

The fourth proportional to 690,494,409.02, 1,036,396,426.44 and 427,383,074.14 is: 641,479,909.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,494,409.02 : 1,036,396,426.44 = 427,383,074.14 : x
  2. Step 2: Convert to fraction form
    690,494,409.02/1,036,396,426.44 = 427,383,074.14/x
  3. Step 3: Cross multiply
    690,494,409.02x = 1,036,396,426.44 × 427,383,074.14
  4. Step 4: Simplify right side
    690,494,409.02x = 442,938,290,759,637,568
  5. Step 5: Solve for x
    x = 442,938,290,759,637,568/690,494,409.02
  6. Step 6: Final answer
    x = 641,479,909.14

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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.