Finding the Fourth Proportional to 1,383,736.08, 1,909,552.64 and 780,119.76
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Solution
The fourth proportional to 1,383,736.08, 1,909,552.64 and 780,119.76 is: 1,076,563.49
Step by Step Solution
- Step 1: Write the proportion equation
1,383,736.08 : 1,909,552.64 = 780,119.76 : x - Step 2: Convert to fraction form
1,383,736.08/1,909,552.64 = 780,119.76/x - Step 3: Cross multiply
1,383,736.08x = 1,909,552.64 × 780,119.76 - Step 4: Simplify right side
1,383,736.08x = 1,489,679,747,224.17 - Step 5: Solve for x
x = 1,489,679,747,224.17/1,383,736.08 - Step 6: Final answer
x = 1,076,563.49
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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.