Finding the Fourth Proportional to 679,007.80, 1,018,511.70 and 442,811.80
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Solution
The fourth proportional to 679,007.80, 1,018,511.70 and 442,811.80 is: 664,217.70
Step by Step Solution
- Step 1: Write the proportion equation
679,007.80 : 1,018,511.70 = 442,811.80 : x - Step 2: Convert to fraction form
679,007.80/1,018,511.70 = 442,811.80/x - Step 3: Cross multiply
679,007.80x = 1,018,511.70 × 442,811.80 - Step 4: Simplify right side
679,007.80x = 451,008,999,198.06 - Step 5: Solve for x
x = 451,008,999,198.06/679,007.80 - Step 6: Final answer
x = 664,217.70
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1.5x scale
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.