Home / 728,401.45-1,005,267.44-422,571.37

Finding the Fourth Proportional to 728,401.45, 1,005,267.44 and 422,571.37

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Solution

The fourth proportional to 728,401.45, 1,005,267.44 and 422,571.37 is: 583,191.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,401.45 : 1,005,267.44 = 422,571.37 : x
  2. Step 2: Convert to fraction form
    728,401.45/1,005,267.44 = 422,571.37/x
  3. Step 3: Cross multiply
    728,401.45x = 1,005,267.44 × 422,571.37
  4. Step 4: Simplify right side
    728,401.45x = 424,797,239,337.19
  5. Step 5: Solve for x
    x = 424,797,239,337.19/728,401.45
  6. Step 6: Final answer
    x = 583,191.10

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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.