Home / 690,494,410.50-1,036,396,428.65-427,383,075.63

Finding the Fourth Proportional to 690,494,410.50, 1,036,396,428.65 and 427,383,075.63

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Solution

The fourth proportional to 690,494,410.50, 1,036,396,428.65 and 427,383,075.63 is: 641,479,911.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,494,410.50 : 1,036,396,428.65 = 427,383,075.63 : x
  2. Step 2: Convert to fraction form
    690,494,410.50/1,036,396,428.65 = 427,383,075.63/x
  3. Step 3: Cross multiply
    690,494,410.50x = 1,036,396,428.65 × 427,383,075.63
  4. Step 4: Simplify right side
    690,494,410.50x = 442,938,293,246,247,936
  5. Step 5: Solve for x
    x = 442,938,293,246,247,936/690,494,410.50
  6. Step 6: Final answer
    x = 641,479,911.37

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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.