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Finding the Fourth Proportional to 490,912.34, 736,581.74 and 266,431.37

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Solution

The fourth proportional to 490,912.34, 736,581.74 and 266,431.37 is: 399,762.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,912.34 : 736,581.74 = 266,431.37 : x
  2. Step 2: Convert to fraction form
    490,912.34/736,581.74 = 266,431.37/x
  3. Step 3: Cross multiply
    490,912.34x = 736,581.74 × 266,431.37
  4. Step 4: Simplify right side
    490,912.34x = 196,248,477,090.12
  5. Step 5: Solve for x
    x = 196,248,477,090.12/490,912.34
  6. Step 6: Final answer
    x = 399,762.77

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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.