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Finding the Fourth Proportional to 488,887.11, 734,453.46 and 345,123.45

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Solution

The fourth proportional to 488,887.11, 734,453.46 and 345,123.45 is: 518,477.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,887.11 : 734,453.46 = 345,123.45 : x
  2. Step 2: Convert to fraction form
    488,887.11/734,453.46 = 345,123.45/x
  3. Step 3: Cross multiply
    488,887.11x = 734,453.46 × 345,123.45
  4. Step 4: Simplify right side
    488,887.11x = 253,477,111,979.64
  5. Step 5: Solve for x
    x = 253,477,111,979.64/488,887.11
  6. Step 6: Final answer
    x = 518,477.80

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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.