Home / 669,409.80-1,002,753.90-415,912.20

Finding the Fourth Proportional to 669,409.80, 1,002,753.90 and 415,912.20

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Solution

The fourth proportional to 669,409.80, 1,002,753.90 and 415,912.20 is: 623,022.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,409.80 : 1,002,753.90 = 415,912.20 : x
  2. Step 2: Convert to fraction form
    669,409.80/1,002,753.90 = 415,912.20/x
  3. Step 3: Cross multiply
    669,409.80x = 1,002,753.90 × 415,912.20
  4. Step 4: Simplify right side
    669,409.80x = 417,057,580,607.58
  5. Step 5: Solve for x
    x = 417,057,580,607.58/669,409.80
  6. Step 6: Final answer
    x = 623,022.82

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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.