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Finding the Fourth Proportional to 690,604.84, 953,020.14 and 384,680.44

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Solution

The fourth proportional to 690,604.84, 953,020.14 and 384,680.44 is: 530,850.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,604.84 : 953,020.14 = 384,680.44 : x
  2. Step 2: Convert to fraction form
    690,604.84/953,020.14 = 384,680.44/x
  3. Step 3: Cross multiply
    690,604.84x = 953,020.14 × 384,680.44
  4. Step 4: Simplify right side
    690,604.84x = 366,608,206,784.06
  5. Step 5: Solve for x
    x = 366,608,206,784.06/690,604.84
  6. Step 6: Final answer
    x = 530,850.91

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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.