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Finding the Fourth Proportional to 436,483.68, 654,723.69 and 120,939.67

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Solution

The fourth proportional to 436,483.68, 654,723.69 and 120,939.67 is: 181,409.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,483.68 : 654,723.69 = 120,939.67 : x
  2. Step 2: Convert to fraction form
    436,483.68/654,723.69 = 120,939.67/x
  3. Step 3: Cross multiply
    436,483.68x = 654,723.69 × 120,939.67
  4. Step 4: Simplify right side
    436,483.68x = 79,182,067,009.78
  5. Step 5: Solve for x
    x = 79,182,067,009.78/436,483.68
  6. Step 6: Final answer
    x = 181,409.00

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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.