Finding the Fourth Proportional to 493,781.14, 681,431.98 and 278,930.26
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Solution
The fourth proportional to 493,781.14, 681,431.98 and 278,930.26 is: 384,931.67
Step by Step Solution
- Step 1: Write the proportion equation
493,781.14 : 681,431.98 = 278,930.26 : x - Step 2: Convert to fraction form
493,781.14/681,431.98 = 278,930.26/x - Step 3: Cross multiply
493,781.14x = 681,431.98 × 278,930.26 - Step 4: Simplify right side
493,781.14x = 190,071,999,353.72 - Step 5: Solve for x
x = 190,071,999,353.72/493,781.14 - Step 6: Final answer
x = 384,931.67
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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.