Home / 450,639.27-621,219.65-343,021.86

Finding the Fourth Proportional to 450,639.27, 621,219.65 and 343,021.86

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Solution

The fourth proportional to 450,639.27, 621,219.65 and 343,021.86 is: 472,865.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,639.27 : 621,219.65 = 343,021.86 : x
  2. Step 2: Convert to fraction form
    450,639.27/621,219.65 = 343,021.86/x
  3. Step 3: Cross multiply
    450,639.27x = 621,219.65 × 343,021.86
  4. Step 4: Simplify right side
    450,639.27x = 213,091,918,096.44
  5. Step 5: Solve for x
    x = 213,091,918,096.44/450,639.27
  6. Step 6: Final answer
    x = 472,865.84

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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.