Finding the Third Proportional to 421,138,720 and 908,865,368
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Solution
The third proportional to 421,138,720 and 908,865,368 is: 1,961,435,075.72
Step by Step Solution
- Step 1: Write the proportion equation
421,138,720 : 908,865,368 = 908,865,368 : x - Step 2: Convert to fraction form
421,138,720/908,865,368 = 908,865,368/x - Step 3: Cross multiply
421,138,720x = 908,865,368 × 908,865,368 - Step 4: Simplify right side
421,138,720x = 826,036,257,149,775,360 - Step 5: Solve for x
x = 826,036,257,149,775,360/421,138,720 - Step 6: Final answer
x = 1,961,435,075.72
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Why These Related Problems?
These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.