Finding the Fourth Proportional to 1,281,943.64, 1,769,071.92 and 708,969.08
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Solution
The fourth proportional to 1,281,943.64, 1,769,071.92 and 708,969.08 is: 978,371.63
Step by Step Solution
- Step 1: Write the proportion equation
1,281,943.64 : 1,769,071.92 = 708,969.08 : x - Step 2: Convert to fraction form
1,281,943.64/1,769,071.92 = 708,969.08/x - Step 3: Cross multiply
1,281,943.64x = 1,769,071.92 × 708,969.08 - Step 4: Simplify right side
1,281,943.64x = 1,254,217,291,576.23 - Step 5: Solve for x
x = 1,254,217,291,576.23/1,281,943.64 - Step 6: Final answer
x = 978,371.63
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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.