Finding the Fourth Proportional to 1,296,841,513.14, 1,789,619,924.07 and 702,121,242.78
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Solution
The fourth proportional to 1,296,841,513.14, 1,789,619,924.07 and 702,121,242.78 is: 968,915,748.35
Step by Step Solution
- Step 1: Write the proportion equation
1,296,841,513.14 : 1,789,619,924.07 = 702,121,242.78 : x - Step 2: Convert to fraction form
1,296,841,513.14/1,789,619,924.07 = 702,121,242.78/x - Step 3: Cross multiply
1,296,841,513.14x = 1,789,619,924.07 × 702,121,242.78 - Step 4: Simplify right side
1,296,841,513.14x = 1,256,530,165,191,877,632 - Step 5: Solve for x
x = 1,256,530,165,191,877,632/1,296,841,513.14 - Step 6: Final answer
x = 968,915,748.35
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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.