Home / 427,824,529.20-641,736,793.80-398,914,138.80

Finding the Fourth Proportional to 427,824,529.20, 641,736,793.80 and 398,914,138.80

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Solution

The fourth proportional to 427,824,529.20, 641,736,793.80 and 398,914,138.80 is: 598,371,208.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,824,529.20 : 641,736,793.80 = 398,914,138.80 : x
  2. Step 2: Convert to fraction form
    427,824,529.20/641,736,793.80 = 398,914,138.80/x
  3. Step 3: Cross multiply
    427,824,529.20x = 641,736,793.80 × 398,914,138.80
  4. Step 4: Simplify right side
    427,824,529.20x = 255,997,880,435,000,160
  5. Step 5: Solve for x
    x = 255,997,880,435,000,160/427,824,529.20
  6. Step 6: Final answer
    x = 598,371,208.20

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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.