Finding the Fourth Proportional to 7,920,159.84, 11,860,144.20 and 6,637,394.16
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Solution
The fourth proportional to 7,920,159.84, 11,860,144.20 and 6,637,394.16 is: 9,939,250.40
Step by Step Solution
- Step 1: Write the proportion equation
7,920,159.84 : 11,860,144.20 = 6,637,394.16 : x - Step 2: Convert to fraction form
7,920,159.84/11,860,144.20 = 6,637,394.16/x - Step 3: Cross multiply
7,920,159.84x = 11,860,144.20 × 6,637,394.16 - Step 4: Simplify right side
7,920,159.84x = 78,720,451,849,837.88 - Step 5: Solve for x
x = 78,720,451,849,837.88/7,920,159.84 - Step 6: Final answer
x = 9,939,250.40
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.