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Finding the Fourth Proportional to 657,805.67, 907,771.83 and 355,999.67

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Solution

The fourth proportional to 657,805.67, 907,771.83 and 355,999.67 is: 491,279.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,805.67 : 907,771.83 = 355,999.67 : x
  2. Step 2: Convert to fraction form
    657,805.67/907,771.83 = 355,999.67/x
  3. Step 3: Cross multiply
    657,805.67x = 907,771.83 × 355,999.67
  4. Step 4: Simplify right side
    657,805.67x = 323,166,467,376.44
  5. Step 5: Solve for x
    x = 323,166,467,376.44/657,805.67
  6. Step 6: Final answer
    x = 491,279.54

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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.