Finding the Fourth Proportional to 1,296,842,327.68, 1,789,621,047.82 and 702,122,056.96
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Solution
The fourth proportional to 1,296,842,327.68, 1,789,621,047.82 and 702,122,056.96 is: 968,916,871.74
Step by Step Solution
- Step 1: Write the proportion equation
1,296,842,327.68 : 1,789,621,047.82 = 702,122,056.96 : x - Step 2: Convert to fraction form
1,296,842,327.68/1,789,621,047.82 = 702,122,056.96/x - Step 3: Cross multiply
1,296,842,327.68x = 1,789,621,047.82 × 702,122,056.96 - Step 4: Simplify right side
1,296,842,327.68x = 1,256,532,411,274,288,896 - Step 5: Solve for x
x = 1,256,532,411,274,288,896/1,296,842,327.68 - Step 6: Final answer
x = 968,916,871.74
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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.