Finding the Fourth Proportional to 515,950.80, 711,988.16 and 286,522.65
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Solution
The fourth proportional to 515,950.80, 711,988.16 and 286,522.65 is: 395,387.96
Step by Step Solution
- Step 1: Write the proportion equation
515,950.80 : 711,988.16 = 286,522.65 : x - Step 2: Convert to fraction form
515,950.80/711,988.16 = 286,522.65/x - Step 3: Cross multiply
515,950.80x = 711,988.16 × 286,522.65 - Step 4: Simplify right side
515,950.80x = 204,000,732,939.21 - Step 5: Solve for x
x = 204,000,732,939.21/515,950.80 - Step 6: Final answer
x = 395,387.96
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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.