Finding the Fourth Proportional to 2,909,988.84, 4,015,968.10 and 1,638,262.76
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Solution
The fourth proportional to 2,909,988.84, 4,015,968.10 and 1,638,262.76 is: 2,260,905.92
Step by Step Solution
- Step 1: Write the proportion equation
2,909,988.84 : 4,015,968.10 = 1,638,262.76 : x - Step 2: Convert to fraction form
2,909,988.84/4,015,968.10 = 1,638,262.76/x - Step 3: Cross multiply
2,909,988.84x = 4,015,968.10 × 1,638,262.76 - Step 4: Simplify right side
2,909,988.84x = 6,579,210,983,577.96 - Step 5: Solve for x
x = 6,579,210,983,577.96/2,909,988.84 - Step 6: Final answer
x = 2,260,905.92
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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.