Home / 419,905,050.40-629,857,575.60-215,453,792.80

Finding the Fourth Proportional to 419,905,050.40, 629,857,575.60 and 215,453,792.80

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Solution

The fourth proportional to 419,905,050.40, 629,857,575.60 and 215,453,792.80 is: 323,180,689.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,905,050.40 : 629,857,575.60 = 215,453,792.80 : x
  2. Step 2: Convert to fraction form
    419,905,050.40/629,857,575.60 = 215,453,792.80/x
  3. Step 3: Cross multiply
    419,905,050.40x = 629,857,575.60 × 215,453,792.80
  4. Step 4: Simplify right side
    419,905,050.40x = 135,705,203,586,832,752
  5. Step 5: Solve for x
    x = 135,705,203,586,832,752/419,905,050.40
  6. Step 6: Final answer
    x = 323,180,689.20

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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.