Finding the Fourth Proportional to 479,393,278.63, 661,374,493.04 and 278,415,940.72
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Solution
The fourth proportional to 479,393,278.63, 661,374,493.04 and 278,415,940.72 is: 384,104,679.51
Step by Step Solution
- Step 1: Write the proportion equation
479,393,278.63 : 661,374,493.04 = 278,415,940.72 : x - Step 2: Convert to fraction form
479,393,278.63/661,374,493.04 = 278,415,940.72/x - Step 3: Cross multiply
479,393,278.63x = 661,374,493.04 × 278,415,940.72 - Step 4: Simplify right side
479,393,278.63x = 184,137,201,646,552,608 - Step 5: Solve for x
x = 184,137,201,646,552,608/479,393,278.63 - Step 6: Final answer
x = 384,104,679.51
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1.5x scale
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.