Finding the Fourth Proportional to 539,699.85, 744,809.99 and 310,331.61
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Solution
The fourth proportional to 539,699.85, 744,809.99 and 310,331.61 is: 428,271.53
Step by Step Solution
- Step 1: Write the proportion equation
539,699.85 : 744,809.99 = 310,331.61 : x - Step 2: Convert to fraction form
539,699.85/744,809.99 = 310,331.61/x - Step 3: Cross multiply
539,699.85x = 744,809.99 × 310,331.61 - Step 4: Simplify right side
539,699.85x = 231,138,081,789.13 - Step 5: Solve for x
x = 231,138,081,789.13/539,699.85 - Step 6: Final answer
x = 428,271.53
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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.