Finding the Fourth Proportional to 1,012,913.68, 1,398,251.28 and 631,129.08
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Solution
The fourth proportional to 1,012,913.68, 1,398,251.28 and 631,129.08 is: 871,226.31
Step by Step Solution
- Step 1: Write the proportion equation
1,012,913.68 : 1,398,251.28 = 631,129.08 : x - Step 2: Convert to fraction form
1,012,913.68/1,398,251.28 = 631,129.08/x - Step 3: Cross multiply
1,012,913.68x = 1,398,251.28 × 631,129.08 - Step 4: Simplify right side
1,012,913.68x = 882,477,043,955.22 - Step 5: Solve for x
x = 882,477,043,955.22/1,012,913.68 - Step 6: Final answer
x = 871,226.31
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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.