Finding the Fourth Proportional to 419,281,491.70, 628,922,237.55 and 128,148,051.70
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Solution
The fourth proportional to 419,281,491.70, 628,922,237.55 and 128,148,051.70 is: 192,222,077.55
Step by Step Solution
- Step 1: Write the proportion equation
419,281,491.70 : 628,922,237.55 = 128,148,051.70 : x - Step 2: Convert to fraction form
419,281,491.70/628,922,237.55 = 128,148,051.70/x - Step 3: Cross multiply
419,281,491.70x = 628,922,237.55 × 128,148,051.70 - Step 4: Simplify right side
419,281,491.70x = 80,595,159,412,837,072 - Step 5: Solve for x
x = 80,595,159,412,837,072/419,281,491.70 - Step 6: Final answer
x = 192,222,077.55
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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.