Finding the Fourth Proportional to 426,497,599.20, 639,982,463.56 and 208,149,749.94
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Solution
The fourth proportional to 426,497,599.20, 639,982,463.56 and 208,149,749.94 is: 312,339,834.99
Step by Step Solution
- Step 1: Write the proportion equation
426,497,599.20 : 639,982,463.56 = 208,149,749.94 : x - Step 2: Convert to fraction form
426,497,599.20/639,982,463.56 = 208,149,749.94/x - Step 3: Cross multiply
426,497,599.20x = 639,982,463.56 × 208,149,749.94 - Step 4: Simplify right side
426,497,599.20x = 133,212,189,755,999,152 - Step 5: Solve for x
x = 133,212,189,755,999,152/426,497,599.20 - Step 6: Final answer
x = 312,339,834.99
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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.