Finding the Fourth Proportional to 28,473,406.12, 42,717,389.46 and 8,278,648.12
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Solution
The fourth proportional to 28,473,406.12, 42,717,389.46 and 8,278,648.12 is: 12,420,088.92
Step by Step Solution
- Step 1: Write the proportion equation
28,473,406.12 : 42,717,389.46 = 8,278,648.12 : x - Step 2: Convert to fraction form
28,473,406.12/42,717,389.46 = 8,278,648.12/x - Step 3: Cross multiply
28,473,406.12x = 42,717,389.46 × 8,278,648.12 - Step 4: Simplify right side
28,473,406.12x = 353,642,235,944,336.81 - Step 5: Solve for x
x = 353,642,235,944,336.81/28,473,406.12 - Step 6: Final answer
x = 12,420,088.92
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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.