Finding the Fourth Proportional to 1,678,988.36, 2,316,936.48 and 915,025.52
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Solution
The fourth proportional to 1,678,988.36, 2,316,936.48 and 915,025.52 is: 1,262,698.45
Step by Step Solution
- Step 1: Write the proportion equation
1,678,988.36 : 2,316,936.48 = 915,025.52 : x - Step 2: Convert to fraction form
1,678,988.36/2,316,936.48 = 915,025.52/x - Step 3: Cross multiply
1,678,988.36x = 2,316,936.48 × 915,025.52 - Step 4: Simplify right side
1,678,988.36x = 2,120,056,007,418.97 - Step 5: Solve for x
x = 2,120,056,007,418.97/1,678,988.36 - Step 6: Final answer
x = 1,262,698.45
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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.