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Finding the Fourth Proportional to 654,643.78, 903,394.23 and 379,013.26

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Solution

The fourth proportional to 654,643.78, 903,394.23 and 379,013.26 is: 523,030.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,643.78 : 903,394.23 = 379,013.26 : x
  2. Step 2: Convert to fraction form
    654,643.78/903,394.23 = 379,013.26/x
  3. Step 3: Cross multiply
    654,643.78x = 903,394.23 × 379,013.26
  4. Step 4: Simplify right side
    654,643.78x = 342,398,392,177.49
  5. Step 5: Solve for x
    x = 342,398,392,177.49/654,643.78
  6. Step 6: Final answer
    x = 523,030.09

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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.