Finding the Fourth Proportional to 891,212,988.90, 1,229,812,207.76 and 494,704,748.08
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Solution
The fourth proportional to 891,212,988.90, 1,229,812,207.76 and 494,704,748.08 is: 682,658,293.82
Step by Step Solution
- Step 1: Write the proportion equation
891,212,988.90 : 1,229,812,207.76 = 494,704,748.08 : x - Step 2: Convert to fraction form
891,212,988.90/1,229,812,207.76 = 494,704,748.08/x - Step 3: Cross multiply
891,212,988.90x = 1,229,812,207.76 × 494,704,748.08 - Step 4: Simplify right side
891,212,988.90x = 608,393,938,428,393,472 - Step 5: Solve for x
x = 608,393,938,428,393,472/891,212,988.90 - Step 6: Final answer
x = 682,658,293.82
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.