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Finding the Fourth Proportional to 672,487.20, 928,004.43 and 366,556.86

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Solution

The fourth proportional to 672,487.20, 928,004.43 and 366,556.86 is: 505,833.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,487.20 : 928,004.43 = 366,556.86 : x
  2. Step 2: Convert to fraction form
    672,487.20/928,004.43 = 366,556.86/x
  3. Step 3: Cross multiply
    672,487.20x = 928,004.43 × 366,556.86
  4. Step 4: Simplify right side
    672,487.20x = 340,166,389,926.89
  5. Step 5: Solve for x
    x = 340,166,389,926.89/672,487.20
  6. Step 6: Final answer
    x = 505,833.26

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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.