Home / 725,190.10-1,000,703.66-419,286.11

Finding the Fourth Proportional to 725,190.10, 1,000,703.66 and 419,286.11

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Solution

The fourth proportional to 725,190.10, 1,000,703.66 and 419,286.11 is: 578,580.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,190.10 : 1,000,703.66 = 419,286.11 : x
  2. Step 2: Convert to fraction form
    725,190.10/1,000,703.66 = 419,286.11/x
  3. Step 3: Cross multiply
    725,190.10x = 1,000,703.66 × 419,286.11
  4. Step 4: Simplify right side
    725,190.10x = 419,581,137,764.21
  5. Step 5: Solve for x
    x = 419,581,137,764.21/725,190.10
  6. Step 6: Final answer
    x = 578,580.90

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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.