Finding the Fourth Proportional to 1,230,428.70, 1,845,643.05 and 1,209,692.70
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Solution
The fourth proportional to 1,230,428.70, 1,845,643.05 and 1,209,692.70 is: 1,814,539.05
Step by Step Solution
- Step 1: Write the proportion equation
1,230,428.70 : 1,845,643.05 = 1,209,692.70 : x - Step 2: Convert to fraction form
1,230,428.70/1,845,643.05 = 1,209,692.70/x - Step 3: Cross multiply
1,230,428.70x = 1,845,643.05 × 1,209,692.70 - Step 4: Simplify right side
1,230,428.70x = 2,232,660,924,390.74 - Step 5: Solve for x
x = 2,232,660,924,390.74/1,230,428.70 - Step 6: Final answer
x = 1,814,539.05
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.