Finding the Fourth Proportional to 6,439,888.40, 8,887,259.12 and 3,539,382.08
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Solution
The fourth proportional to 6,439,888.40, 8,887,259.12 and 3,539,382.08 is: 4,884,464.40
Step by Step Solution
- Step 1: Write the proportion equation
6,439,888.40 : 8,887,259.12 = 3,539,382.08 : x - Step 2: Convert to fraction form
6,439,888.40/8,887,259.12 = 3,539,382.08/x - Step 3: Cross multiply
6,439,888.40x = 8,887,259.12 × 3,539,382.08 - Step 4: Simplify right side
6,439,888.40x = 31,455,405,607,511.37 - Step 5: Solve for x
x = 31,455,405,607,511.37/6,439,888.40 - Step 6: Final answer
x = 4,884,464.40
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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.