Finding the Fourth Proportional to 1,247,621,305,866.90, 1,721,716,096,307.40 and 698,916,473,215.90
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Solution
The fourth proportional to 1,247,621,305,866.90, 1,721,716,096,307.40 and 698,916,473,215.90 is: 964,504,001,536.02
Step by Step Solution
- Step 1: Write the proportion equation
1,247,621,305,866.90 : 1,721,716,096,307.40 = 698,916,473,215.90 : x - Step 2: Convert to fraction form
1,247,621,305,866.90/1,721,716,096,307.40 = 698,916,473,215.90/x - Step 3: Cross multiply
1,247,621,305,866.90x = 1,721,716,096,307.40 × 698,916,473,215.90 - Step 4: Simplify right side
1,247,621,305,866.90x = 1,203,335,741,910,214,831,505,408 - Step 5: Solve for x
x = 1,203,335,741,910,214,831,505,408/1,247,621,305,866.90 - Step 6: Final answer
x = 964,504,001,536.02
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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.