Finding the Fourth Proportional to 1,989,053.76, 2,744,897.84 and 1,129,613.92
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Solution
The fourth proportional to 1,989,053.76, 2,744,897.84 and 1,129,613.92 is: 1,558,869.28
Step by Step Solution
- Step 1: Write the proportion equation
1,989,053.76 : 2,744,897.84 = 1,129,613.92 : x - Step 2: Convert to fraction form
1,989,053.76/2,744,897.84 = 1,129,613.92/x - Step 3: Cross multiply
1,989,053.76x = 2,744,897.84 × 1,129,613.92 - Step 4: Simplify right side
1,989,053.76x = 3,100,674,809,041.93 - Step 5: Solve for x
x = 3,100,674,809,041.93/1,989,053.76 - Step 6: Final answer
x = 1,558,869.28
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.