Home / 426,980,765.70-640,467,999.27-120,266,087.94

Finding the Fourth Proportional to 426,980,765.70, 640,467,999.27 and 120,266,087.94

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Solution

The fourth proportional to 426,980,765.70, 640,467,999.27 and 120,266,087.94 is: 180,398,244.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,980,765.70 : 640,467,999.27 = 120,266,087.94 : x
  2. Step 2: Convert to fraction form
    426,980,765.70/640,467,999.27 = 120,266,087.94/x
  3. Step 3: Cross multiply
    426,980,765.70x = 640,467,999.27 × 120,266,087.94
  4. Step 4: Simplify right side
    426,980,765.70x = 77,026,580,722,961,664
  5. Step 5: Solve for x
    x = 77,026,580,722,961,664/426,980,765.70
  6. Step 6: Final answer
    x = 180,398,244.86

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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.