Finding the Fourth Proportional to 1,372,132,971.24, 1,893,536,846.58 and 777,416,287.56
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Solution
The fourth proportional to 1,372,132,971.24, 1,893,536,846.58 and 777,416,287.56 is: 1,072,830,706.99
Step by Step Solution
- Step 1: Write the proportion equation
1,372,132,971.24 : 1,893,536,846.58 = 777,416,287.56 : x - Step 2: Convert to fraction form
1,372,132,971.24/1,893,536,846.58 = 777,416,287.56/x - Step 3: Cross multiply
1,372,132,971.24x = 1,893,536,846.58 × 777,416,287.56 - Step 4: Simplify right side
1,372,132,971.24x = 1,472,066,385,626,292,736 - Step 5: Solve for x
x = 1,472,066,385,626,292,736/1,372,132,971.24 - Step 6: Final answer
x = 1,072,830,706.99
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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.