Home / 430,952,861-646,520,078.94-139,797,249.80

Finding the Fourth Proportional to 430,952,861, 646,520,078.94 and 139,797,249.80

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Solution

The fourth proportional to 430,952,861, 646,520,078.94 and 139,797,249.80 is: 209,725,325.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,952,861 : 646,520,078.94 = 139,797,249.80 : x
  2. Step 2: Convert to fraction form
    430,952,861/646,520,078.94 = 139,797,249.80/x
  3. Step 3: Cross multiply
    430,952,861x = 646,520,078.94 × 139,797,249.80
  4. Step 4: Simplify right side
    430,952,861x = 90,381,728,976,290,912
  5. Step 5: Solve for x
    x = 90,381,728,976,290,912/430,952,861
  6. Step 6: Final answer
    x = 209,725,325.33

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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.