Finding the Fourth Proportional to 1,991,314, 2,748,220.68 and 1,227,347.92
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Solution
The fourth proportional to 1,991,314, 2,748,220.68 and 1,227,347.92 is: 1,693,867.94
Step by Step Solution
- Step 1: Write the proportion equation
1,991,314 : 2,748,220.68 = 1,227,347.92 : x - Step 2: Convert to fraction form
1,991,314/2,748,220.68 = 1,227,347.92/x - Step 3: Cross multiply
1,991,314x = 2,748,220.68 × 1,227,347.92 - Step 4: Simplify right side
1,991,314x = 3,373,022,935,298.99 - Step 5: Solve for x
x = 3,373,022,935,298.99/1,991,314 - Step 6: Final answer
x = 1,693,867.94
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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.