Home / 690,503,192.85-1,036,409,607.81-427,391,855.26

Finding the Fourth Proportional to 690,503,192.85, 1,036,409,607.81 and 427,391,855.26

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Solution

The fourth proportional to 690,503,192.85, 1,036,409,607.81 and 427,391,855.26 is: 641,493,087.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,503,192.85 : 1,036,409,607.81 = 427,391,855.26 : x
  2. Step 2: Convert to fraction form
    690,503,192.85/1,036,409,607.81 = 427,391,855.26/x
  3. Step 3: Cross multiply
    690,503,192.85x = 1,036,409,607.81 × 427,391,855.26
  4. Step 4: Simplify right side
    690,503,192.85x = 442,953,025,091,204,864
  5. Step 5: Solve for x
    x = 442,953,025,091,204,864/690,503,192.85
  6. Step 6: Final answer
    x = 641,493,087.47

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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.