Finding the Fourth Proportional to 8,993,405.84, 12,408,400.68 and 5,370,411.92
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Solution
The fourth proportional to 8,993,405.84, 12,408,400.68 and 5,370,411.92 is: 7,409,675.95
Step by Step Solution
- Step 1: Write the proportion equation
8,993,405.84 : 12,408,400.68 = 5,370,411.92 : x - Step 2: Convert to fraction form
8,993,405.84/12,408,400.68 = 5,370,411.92/x - Step 3: Cross multiply
8,993,405.84x = 12,408,400.68 × 5,370,411.92 - Step 4: Simplify right side
8,993,405.84x = 66,638,222,920,008.10 - Step 5: Solve for x
x = 66,638,222,920,008.10/8,993,405.84 - Step 6: Final answer
x = 7,409,675.95
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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.