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Finding the Fourth Proportional to 551,879.19, 762,171.53 and 380,243.43

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Solution

The fourth proportional to 551,879.19, 762,171.53 and 380,243.43 is: 525,134.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,879.19 : 762,171.53 = 380,243.43 : x
  2. Step 2: Convert to fraction form
    551,879.19/762,171.53 = 380,243.43/x
  3. Step 3: Cross multiply
    551,879.19x = 762,171.53 × 380,243.43
  4. Step 4: Simplify right side
    551,879.19x = 289,810,714,914.33
  5. Step 5: Solve for x
    x = 289,810,714,914.33/551,879.19
  6. Step 6: Final answer
    x = 525,134.34

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1.5x scale

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.