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Finding the Fourth Proportional to 404,597.70, 606,977.55 and 120,287.70

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Solution

The fourth proportional to 404,597.70, 606,977.55 and 120,287.70 is: 180,455.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,597.70 : 606,977.55 = 120,287.70 : x
  2. Step 2: Convert to fraction form
    404,597.70/606,977.55 = 120,287.70/x
  3. Step 3: Cross multiply
    404,597.70x = 606,977.55 × 120,287.70
  4. Step 4: Simplify right side
    404,597.70x = 73,011,933,441.14
  5. Step 5: Solve for x
    x = 73,011,933,441.14/404,597.70
  6. Step 6: Final answer
    x = 180,455.63

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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.