Finding the Fourth Proportional to 681,959.58, 1,021,610.76 and 415,058.10
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Solution
The fourth proportional to 681,959.58, 1,021,610.76 and 415,058.10 is: 621,778.52
Step by Step Solution
- Step 1: Write the proportion equation
681,959.58 : 1,021,610.76 = 415,058.10 : x - Step 2: Convert to fraction form
681,959.58/1,021,610.76 = 415,058.10/x - Step 3: Cross multiply
681,959.58x = 1,021,610.76 × 415,058.10 - Step 4: Simplify right side
681,959.58x = 424,027,820,985.16 - Step 5: Solve for x
x = 424,027,820,985.16/681,959.58 - Step 6: Final answer
x = 621,778.52
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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.