Finding the Fourth Proportional to 1,151,755.60, 1,589,421.64 and 642,457.68
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Solution
The fourth proportional to 1,151,755.60, 1,589,421.64 and 642,457.68 is: 886,590.99
Step by Step Solution
- Step 1: Write the proportion equation
1,151,755.60 : 1,589,421.64 = 642,457.68 : x - Step 2: Convert to fraction form
1,151,755.60/1,589,421.64 = 642,457.68/x - Step 3: Cross multiply
1,151,755.60x = 1,589,421.64 × 642,457.68 - Step 4: Simplify right side
1,151,755.60x = 1,021,136,139,376.20 - Step 5: Solve for x
x = 1,021,136,139,376.20/1,151,755.60 - Step 6: Final answer
x = 886,590.99
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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.