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Finding the Fourth Proportional to 633,503.78, 874,235.46 and 347,034.20

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Solution

The fourth proportional to 633,503.78, 874,235.46 and 347,034.20 is: 478,907.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,503.78 : 874,235.46 = 347,034.20 : x
  2. Step 2: Convert to fraction form
    633,503.78/874,235.46 = 347,034.20/x
  3. Step 3: Cross multiply
    633,503.78x = 874,235.46 × 347,034.20
  4. Step 4: Simplify right side
    633,503.78x = 303,389,603,472.73
  5. Step 5: Solve for x
    x = 303,389,603,472.73/633,503.78
  6. Step 6: Final answer
    x = 478,907.33

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Double scale
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1.5x scale

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.