Finding the Fourth Proportional to 6,420,809.61, 8,860,482.14 and 3,520,136.88
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Solution
The fourth proportional to 6,420,809.61, 8,860,482.14 and 3,520,136.88 is: 4,857,659.99
Step by Step Solution
- Step 1: Write the proportion equation
6,420,809.61 : 8,860,482.14 = 3,520,136.88 : x - Step 2: Convert to fraction form
6,420,809.61/8,860,482.14 = 3,520,136.88/x - Step 3: Cross multiply
6,420,809.61x = 8,860,482.14 × 3,520,136.88 - Step 4: Simplify right side
6,420,809.61x = 31,190,109,937,994.64 - Step 5: Solve for x
x = 31,190,109,937,994.64/6,420,809.61 - Step 6: Final answer
x = 4,857,659.99
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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.