Home / 726,089.80-1,002,003.78-408,137.80

Finding the Fourth Proportional to 726,089.80, 1,002,003.78 and 408,137.80

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Solution

The fourth proportional to 726,089.80, 1,002,003.78 and 408,137.80 is: 563,230.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,089.80 : 1,002,003.78 = 408,137.80 : x
  2. Step 2: Convert to fraction form
    726,089.80/1,002,003.78 = 408,137.80/x
  3. Step 3: Cross multiply
    726,089.80x = 1,002,003.78 × 408,137.80
  4. Step 4: Simplify right side
    726,089.80x = 408,955,618,360.88
  5. Step 5: Solve for x
    x = 408,955,618,360.88/726,089.80
  6. Step 6: Final answer
    x = 563,230.08

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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.