Finding the Fourth Proportional to 1,642,743.18, 2,269,204.47 and 1,237,905.18
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Solution
The fourth proportional to 1,642,743.18, 2,269,204.47 and 1,237,905.18 is: 1,709,981.21
Step by Step Solution
- Step 1: Write the proportion equation
1,642,743.18 : 2,269,204.47 = 1,237,905.18 : x - Step 2: Convert to fraction form
1,642,743.18/2,269,204.47 = 1,237,905.18/x - Step 3: Cross multiply
1,642,743.18x = 2,269,204.47 × 1,237,905.18 - Step 4: Simplify right side
1,642,743.18x = 2,809,059,967,892.15 - Step 5: Solve for x
x = 2,809,059,967,892.15/1,642,743.18 - Step 6: Final answer
x = 1,709,981.21
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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.