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Finding the Fourth Proportional to 561,648.60, 842,472.90 and 349,072.20

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Solution

The fourth proportional to 561,648.60, 842,472.90 and 349,072.20 is: 523,608.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,648.60 : 842,472.90 = 349,072.20 : x
  2. Step 2: Convert to fraction form
    561,648.60/842,472.90 = 349,072.20/x
  3. Step 3: Cross multiply
    561,648.60x = 842,472.90 × 349,072.20
  4. Step 4: Simplify right side
    561,648.60x = 294,083,868,643.38
  5. Step 5: Solve for x
    x = 294,083,868,643.38/561,648.60
  6. Step 6: Final answer
    x = 523,608.30

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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.