Finding the Fourth Proportional to 1,289,517.68, 1,779,698.04 and 780,224.24
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Solution
The fourth proportional to 1,289,517.68, 1,779,698.04 and 780,224.24 is: 1,076,808.46
Step by Step Solution
- Step 1: Write the proportion equation
1,289,517.68 : 1,779,698.04 = 780,224.24 : x - Step 2: Convert to fraction form
1,289,517.68/1,779,698.04 = 780,224.24/x - Step 3: Cross multiply
1,289,517.68x = 1,779,698.04 × 780,224.24 - Step 4: Simplify right side
1,289,517.68x = 1,388,563,550,688.49 - Step 5: Solve for x
x = 1,388,563,550,688.49/1,289,517.68 - Step 6: Final answer
x = 1,076,808.46
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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.