Home / 839,808,212.70-1,259,712,319.05-257,632,311.90

Finding the Fourth Proportional to 839,808,212.70, 1,259,712,319.05 and 257,632,311.90

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Solution

The fourth proportional to 839,808,212.70, 1,259,712,319.05 and 257,632,311.90 is: 386,448,467.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,808,212.70 : 1,259,712,319.05 = 257,632,311.90 : x
  2. Step 2: Convert to fraction form
    839,808,212.70/1,259,712,319.05 = 257,632,311.90/x
  3. Step 3: Cross multiply
    839,808,212.70x = 1,259,712,319.05 × 257,632,311.90
  4. Step 4: Simplify right side
    839,808,212.70x = 324,542,597,085,761,920
  5. Step 5: Solve for x
    x = 324,542,597,085,761,920/839,808,212.70
  6. Step 6: Final answer
    x = 386,448,467.85

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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.