Home / 419,403.22-578,777.10-228,417.37

Finding the Fourth Proportional to 419,403.22, 578,777.10 and 228,417.37

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Solution

The fourth proportional to 419,403.22, 578,777.10 and 228,417.37 is: 315,216.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,403.22 : 578,777.10 = 228,417.37 : x
  2. Step 2: Convert to fraction form
    419,403.22/578,777.10 = 228,417.37/x
  3. Step 3: Cross multiply
    419,403.22x = 578,777.10 × 228,417.37
  4. Step 4: Simplify right side
    419,403.22x = 132,202,740,694.72
  5. Step 5: Solve for x
    x = 132,202,740,694.72/419,403.22
  6. Step 6: Final answer
    x = 315,216.32

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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.