Finding the Fourth Proportional to 4,257,643.20, 6,386,464.80 and 3,909,278.40
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Solution
The fourth proportional to 4,257,643.20, 6,386,464.80 and 3,909,278.40 is: 5,863,917.60
Step by Step Solution
- Step 1: Write the proportion equation
4,257,643.20 : 6,386,464.80 = 3,909,278.40 : x - Step 2: Convert to fraction form
4,257,643.20/6,386,464.80 = 3,909,278.40/x - Step 3: Cross multiply
4,257,643.20x = 6,386,464.80 × 3,909,278.40 - Step 4: Simplify right side
4,257,643.20x = 24,966,468,895,000.32 - Step 5: Solve for x
x = 24,966,468,895,000.32/4,257,643.20 - Step 6: Final answer
x = 5,863,917.60
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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.