Finding the Fourth Proportional to 1,128,029.49, 1,556,683.26 and 644,593.48
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Solution
The fourth proportional to 1,128,029.49, 1,556,683.26 and 644,593.48 is: 889,540.47
Step by Step Solution
- Step 1: Write the proportion equation
1,128,029.49 : 1,556,683.26 = 644,593.48 : x - Step 2: Convert to fraction form
1,128,029.49/1,556,683.26 = 644,593.48/x - Step 3: Cross multiply
1,128,029.49x = 1,556,683.26 × 644,593.48 - Step 4: Simplify right side
1,128,029.49x = 1,003,427,877,138.05 - Step 5: Solve for x
x = 1,003,427,877,138.05/1,128,029.49 - Step 6: Final answer
x = 889,540.47
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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.