Finding the Fourth Proportional to 663,959.92, 916,335.66 and 405,988.06
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Solution
The fourth proportional to 663,959.92, 916,335.66 and 405,988.06 is: 560,306.92
Step by Step Solution
- Step 1: Write the proportion equation
663,959.92 : 916,335.66 = 405,988.06 : x - Step 2: Convert to fraction form
663,959.92/916,335.66 = 405,988.06/x - Step 3: Cross multiply
663,959.92x = 916,335.66 × 405,988.06 - Step 4: Simplify right side
663,959.92x = 372,021,336,912.22 - Step 5: Solve for x
x = 372,021,336,912.22/663,959.92 - Step 6: Final answer
x = 560,306.92
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.