Finding the Third Proportional to 128,256,503 and 285,132,574
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Solution
The third proportional to 128,256,503 and 285,132,574 is: 633,890,546.32
Step by Step Solution
- Step 1: Write the proportion equation
128,256,503 : 285,132,574 = 285,132,574 : x - Step 2: Convert to fraction form
128,256,503/285,132,574 = 285,132,574/x - Step 3: Cross multiply
128,256,503x = 285,132,574 × 285,132,574 - Step 4: Simplify right side
128,256,503x = 81,300,584,755,865,472 - Step 5: Solve for x
x = 81,300,584,755,865,472/128,256,503 - Step 6: Final answer
x = 633,890,546.32
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Why These Related Problems?
These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.