Finding the Fourth Proportional to 1,128,312.18, 1,556,692.05 and 644,534.82
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Solution
The fourth proportional to 1,128,312.18, 1,556,692.05 and 644,534.82 is: 889,241.69
Step by Step Solution
- Step 1: Write the proportion equation
1,128,312.18 : 1,556,692.05 = 644,534.82 : x - Step 2: Convert to fraction form
1,128,312.18/1,556,692.05 = 644,534.82/x - Step 3: Cross multiply
1,128,312.18x = 1,556,692.05 × 644,534.82 - Step 4: Simplify right side
1,128,312.18x = 1,003,342,230,242.18 - Step 5: Solve for x
x = 1,003,342,230,242.18/1,128,312.18 - Step 6: Final answer
x = 889,241.69
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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.