Home / 419,917,008.60-629,875,512.90-147,315,331.80

Finding the Fourth Proportional to 419,917,008.60, 629,875,512.90 and 147,315,331.80

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Solution

The fourth proportional to 419,917,008.60, 629,875,512.90 and 147,315,331.80 is: 220,972,997.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,917,008.60 : 629,875,512.90 = 147,315,331.80 : x
  2. Step 2: Convert to fraction form
    419,917,008.60/629,875,512.90 = 147,315,331.80/x
  3. Step 3: Cross multiply
    419,917,008.60x = 629,875,512.90 × 147,315,331.80
  4. Step 4: Simplify right side
    419,917,008.60x = 92,790,320,175,558,688
  5. Step 5: Solve for x
    x = 92,790,320,175,558,688/419,917,008.60
  6. Step 6: Final answer
    x = 220,972,997.70

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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.