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Finding the Fourth Proportional to 690,133.02, 952,364.99 and 384,209.43

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Solution

The fourth proportional to 690,133.02, 952,364.99 and 384,209.43 is: 530,198.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,133.02 : 952,364.99 = 384,209.43 : x
  2. Step 2: Convert to fraction form
    690,133.02/952,364.99 = 384,209.43/x
  3. Step 3: Cross multiply
    690,133.02x = 952,364.99 × 384,209.43
  4. Step 4: Simplify right side
    690,133.02x = 365,907,610,920.38
  5. Step 5: Solve for x
    x = 365,907,610,920.38/690,133.02
  6. Step 6: Final answer
    x = 530,198.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.