Finding the Fourth Proportional to 442,889,985.20, 664,331,478.60 and 115,364,865.20
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Solution
The fourth proportional to 442,889,985.20, 664,331,478.60 and 115,364,865.20 is: 173,046,386.32
Step by Step Solution
- Step 1: Write the proportion equation
442,889,985.20 : 664,331,478.60 = 115,364,865.20 : x - Step 2: Convert to fraction form
442,889,985.20/664,331,478.60 = 115,364,865.20/x - Step 3: Cross multiply
442,889,985.20x = 664,331,478.60 × 115,364,865.20 - Step 4: Simplify right side
442,889,985.20x = 76,640,511,476,805,696 - Step 5: Solve for x
x = 76,640,511,476,805,696/442,889,985.20 - Step 6: Final answer
x = 173,046,386.32
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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.