Finding the Fourth Proportional to 1,420,710.13, 2,129,736.60 and 521,910.55
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Solution
The fourth proportional to 1,420,710.13, 2,129,736.60 and 521,910.55 is: 782,377.75
Step by Step Solution
- Step 1: Write the proportion equation
1,420,710.13 : 2,129,736.60 = 521,910.55 : x - Step 2: Convert to fraction form
1,420,710.13/2,129,736.60 = 521,910.55/x - Step 3: Cross multiply
1,420,710.13x = 2,129,736.60 × 521,910.55 - Step 4: Simplify right side
1,420,710.13x = 1,111,532,000,261.13 - Step 5: Solve for x
x = 1,111,532,000,261.13/1,420,710.13 - Step 6: Final answer
x = 782,377.75
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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.