Finding the Fourth Proportional to 749,807.15, 1,034,729.57 and 405,641.99
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Solution
The fourth proportional to 749,807.15, 1,034,729.57 and 405,641.99 is: 559,783.63
Step by Step Solution
- Step 1: Write the proportion equation
749,807.15 : 1,034,729.57 = 405,641.99 : x - Step 2: Convert to fraction form
749,807.15/1,034,729.57 = 405,641.99/x - Step 3: Cross multiply
749,807.15x = 1,034,729.57 × 405,641.99 - Step 4: Simplify right side
749,807.15x = 419,729,765,487.57 - Step 5: Solve for x
x = 419,729,765,487.57/749,807.15 - Step 6: Final answer
x = 559,783.63
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1.5x scale
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.