Finding the Fourth Proportional to 426,497,599.70, 639,982,464.31 and 208,149,750.44
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Solution
The fourth proportional to 426,497,599.70, 639,982,464.31 and 208,149,750.44 is: 312,339,835.74
Step by Step Solution
- Step 1: Write the proportion equation
426,497,599.70 : 639,982,464.31 = 208,149,750.44 : x - Step 2: Convert to fraction form
426,497,599.70/639,982,464.31 = 208,149,750.44/x - Step 3: Cross multiply
426,497,599.70x = 639,982,464.31 × 208,149,750.44 - Step 4: Simplify right side
426,497,599.70x = 133,212,190,232,102,688 - Step 5: Solve for x
x = 133,212,190,232,102,688/426,497,599.70 - Step 6: Final answer
x = 312,339,835.74
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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.