Home / 669,006.80-1,002,149.40-415,509.20

Finding the Fourth Proportional to 669,006.80, 1,002,149.40 and 415,509.20

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Solution

The fourth proportional to 669,006.80, 1,002,149.40 and 415,509.20 is: 622,418.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,006.80 : 1,002,149.40 = 415,509.20 : x
  2. Step 2: Convert to fraction form
    669,006.80/1,002,149.40 = 415,509.20/x
  3. Step 3: Cross multiply
    669,006.80x = 1,002,149.40 × 415,509.20
  4. Step 4: Simplify right side
    669,006.80x = 416,402,295,474.48
  5. Step 5: Solve for x
    x = 416,402,295,474.48/669,006.80
  6. Step 6: Final answer
    x = 622,418.63

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1.5x scale

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.