Finding the Fourth Proportional to 7,920,047.34, 11,859,975.80 and 6,637,281.62
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Solution
The fourth proportional to 7,920,047.34, 11,859,975.80 and 6,637,281.62 is: 9,939,081.93
Step by Step Solution
- Step 1: Write the proportion equation
7,920,047.34 : 11,859,975.80 = 6,637,281.62 : x - Step 2: Convert to fraction form
7,920,047.34/11,859,975.80 = 6,637,281.62/x - Step 3: Cross multiply
7,920,047.34x = 11,859,975.80 × 6,637,281.62 - Step 4: Simplify right side
7,920,047.34x = 78,717,999,390,984.80 - Step 5: Solve for x
x = 78,717,999,390,984.80/7,920,047.34 - Step 6: Final answer
x = 9,939,081.93
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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.