Finding the Fourth Proportional to 861,855.94, 1,291,036.68 and 399,584.59
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Solution
The fourth proportional to 861,855.94, 1,291,036.68 and 399,584.59 is: 598,566.81
Step by Step Solution
- Step 1: Write the proportion equation
861,855.94 : 1,291,036.68 = 399,584.59 : x - Step 2: Convert to fraction form
861,855.94/1,291,036.68 = 399,584.59/x - Step 3: Cross multiply
861,855.94x = 1,291,036.68 × 399,584.59 - Step 4: Simplify right side
861,855.94x = 515,878,362,452.76 - Step 5: Solve for x
x = 515,878,362,452.76/861,855.94 - Step 6: Final answer
x = 598,566.81
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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.