Home / 480,834.45-719,415.36-420,416.73

Finding the Fourth Proportional to 480,834.45, 719,415.36 and 420,416.73

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Solution

The fourth proportional to 480,834.45, 719,415.36 and 420,416.73 is: 629,019.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,834.45 : 719,415.36 = 420,416.73 : x
  2. Step 2: Convert to fraction form
    480,834.45/719,415.36 = 420,416.73/x
  3. Step 3: Cross multiply
    480,834.45x = 719,415.36 × 420,416.73
  4. Step 4: Simplify right side
    480,834.45x = 302,454,253,162.97
  5. Step 5: Solve for x
    x = 302,454,253,162.97/480,834.45
  6. Step 6: Final answer
    x = 629,019.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.