Finding the Fourth Proportional to 499,959.84, 689,987.68 and 285,108.96
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Solution
The fourth proportional to 499,959.84, 689,987.68 and 285,108.96 is: 393,474.94
Step by Step Solution
- Step 1: Write the proportion equation
499,959.84 : 689,987.68 = 285,108.96 : x - Step 2: Convert to fraction form
499,959.84/689,987.68 = 285,108.96/x - Step 3: Cross multiply
499,959.84x = 689,987.68 × 285,108.96 - Step 4: Simplify right side
499,959.84x = 196,721,669,857.61 - Step 5: Solve for x
x = 196,721,669,857.61/499,959.84 - Step 6: Final answer
x = 393,474.94
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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.