Finding the Fourth Proportional to 986,408.88, 1,361,248.92 and 556,707.12
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Solution
The fourth proportional to 986,408.88, 1,361,248.92 and 556,707.12 is: 768,258.46
Step by Step Solution
- Step 1: Write the proportion equation
986,408.88 : 1,361,248.92 = 556,707.12 : x - Step 2: Convert to fraction form
986,408.88/1,361,248.92 = 556,707.12/x - Step 3: Cross multiply
986,408.88x = 1,361,248.92 × 556,707.12 - Step 4: Simplify right side
986,408.88x = 757,816,965,856.31 - Step 5: Solve for x
x = 757,816,965,856.31/986,408.88 - Step 6: Final answer
x = 768,258.46
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1.5x scale
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.