Finding the Fourth Proportional to 493,646.29, 681,304.59 and 289,809.64
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Solution
The fourth proportional to 493,646.29, 681,304.59 and 289,809.64 is: 399,979.99
Step by Step Solution
- Step 1: Write the proportion equation
493,646.29 : 681,304.59 = 289,809.64 : x - Step 2: Convert to fraction form
493,646.29/681,304.59 = 289,809.64/x - Step 3: Cross multiply
493,646.29x = 681,304.59 × 289,809.64 - Step 4: Simplify right side
493,646.29x = 197,448,636,254.99 - Step 5: Solve for x
x = 197,448,636,254.99/493,646.29 - Step 6: Final answer
x = 399,979.99
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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.