Finding the Fourth Proportional to 7,000,643.20, 10,479,969.60 and 4,159,292.80
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Solution
The fourth proportional to 7,000,643.20, 10,479,969.60 and 4,159,292.80 is: 6,226,465.32
Step by Step Solution
- Step 1: Write the proportion equation
7,000,643.20 : 10,479,969.60 = 4,159,292.80 : x - Step 2: Convert to fraction form
7,000,643.20/10,479,969.60 = 4,159,292.80/x - Step 3: Cross multiply
7,000,643.20x = 10,479,969.60 × 4,159,292.80 - Step 4: Simplify right side
7,000,643.20x = 43,589,262,101,498.88 - Step 5: Solve for x
x = 43,589,262,101,498.88/7,000,643.20 - Step 6: Final answer
x = 6,226,465.32
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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.