Home / 726,090.80-1,002,005.16-408,138.80

Finding the Fourth Proportional to 726,090.80, 1,002,005.16 and 408,138.80

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Solution

The fourth proportional to 726,090.80, 1,002,005.16 and 408,138.80 is: 563,231.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,090.80 : 1,002,005.16 = 408,138.80 : x
  2. Step 2: Convert to fraction form
    726,090.80/1,002,005.16 = 408,138.80/x
  3. Step 3: Cross multiply
    726,090.80x = 1,002,005.16 × 408,138.80
  4. Step 4: Simplify right side
    726,090.80x = 408,957,183,596.21
  5. Step 5: Solve for x
    x = 408,957,183,596.21/726,090.80
  6. Step 6: Final answer
    x = 563,231.46

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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.