Finding the Fourth Proportional to 517,345.79, 713,929.88 and 290,990.75
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Solution
The fourth proportional to 517,345.79, 713,929.88 and 290,990.75 is: 401,563.12
Step by Step Solution
- Step 1: Write the proportion equation
517,345.79 : 713,929.88 = 290,990.75 : x - Step 2: Convert to fraction form
517,345.79/713,929.88 = 290,990.75/x - Step 3: Cross multiply
517,345.79x = 713,929.88 × 290,990.75 - Step 4: Simplify right side
517,345.79x = 207,746,989,773.66 - Step 5: Solve for x
x = 207,746,989,773.66/517,345.79 - Step 6: Final answer
x = 401,563.12
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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.