Finding the Fourth Proportional to 485,051.49, 727,950.74 and 390,512.93
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Solution
The fourth proportional to 485,051.49, 727,950.74 and 390,512.93 is: 586,070.09
Step by Step Solution
- Step 1: Write the proportion equation
485,051.49 : 727,950.74 = 390,512.93 : x - Step 2: Convert to fraction form
485,051.49/727,950.74 = 390,512.93/x - Step 3: Cross multiply
485,051.49x = 727,950.74 × 390,512.93 - Step 4: Simplify right side
485,051.49x = 284,274,170,780.75 - Step 5: Solve for x
x = 284,274,170,780.75/485,051.49 - Step 6: Final answer
x = 586,070.09
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.