Finding the Fourth Proportional to 1,219,400.84, 1,683,053.16 and 811,519.94
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Solution
The fourth proportional to 1,219,400.84, 1,683,053.16 and 811,519.94 is: 1,120,083.86
Step by Step Solution
- Step 1: Write the proportion equation
1,219,400.84 : 1,683,053.16 = 811,519.94 : x - Step 2: Convert to fraction form
1,219,400.84/1,683,053.16 = 811,519.94/x - Step 3: Cross multiply
1,219,400.84x = 1,683,053.16 × 811,519.94 - Step 4: Simplify right side
1,219,400.84x = 1,365,831,199,420.01 - Step 5: Solve for x
x = 1,365,831,199,420.01/1,219,400.84 - Step 6: Final answer
x = 1,120,083.86
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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.