Finding the Fourth Proportional to 1,431,810.11, 1,975,935.36 and 778,480.08
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Solution
The fourth proportional to 1,431,810.11, 1,975,935.36 and 778,480.08 is: 1,074,322.85
Step by Step Solution
- Step 1: Write the proportion equation
1,431,810.11 : 1,975,935.36 = 778,480.08 : x - Step 2: Convert to fraction form
1,431,810.11/1,975,935.36 = 778,480.08/x - Step 3: Cross multiply
1,431,810.11x = 1,975,935.36 × 778,480.08 - Step 4: Simplify right side
1,431,810.11x = 1,538,226,315,415.83 - Step 5: Solve for x
x = 1,538,226,315,415.83/1,431,810.11 - Step 6: Final answer
x = 1,074,322.85
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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.