Finding the Fourth Proportional to 11,578,979.53, 15,979,000.58 and 6,422,378.05
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Solution
The fourth proportional to 11,578,979.53, 15,979,000.58 and 6,422,378.05 is: 8,862,886.61
Step by Step Solution
- Step 1: Write the proportion equation
11,578,979.53 : 15,979,000.58 = 6,422,378.05 : x - Step 2: Convert to fraction form
11,578,979.53/15,979,000.58 = 6,422,378.05/x - Step 3: Cross multiply
11,578,979.53x = 15,979,000.58 × 6,422,378.05 - Step 4: Simplify right side
11,578,979.53x = 102,623,182,585,929.27 - Step 5: Solve for x
x = 102,623,182,585,929.27/11,578,979.53 - Step 6: Final answer
x = 8,862,886.61
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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.