Finding the Fourth Proportional to 681,135.90, 939,967.80 and 394,822.08
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Solution
The fourth proportional to 681,135.90, 939,967.80 and 394,822.08 is: 544,854.62
Step by Step Solution
- Step 1: Write the proportion equation
681,135.90 : 939,967.80 = 394,822.08 : x - Step 2: Convert to fraction form
681,135.90/939,967.80 = 394,822.08/x - Step 3: Cross multiply
681,135.90x = 939,967.80 × 394,822.08 - Step 4: Simplify right side
681,135.90x = 371,120,041,929.02 - Step 5: Solve for x
x = 371,120,041,929.02/681,135.90 - Step 6: Final answer
x = 544,854.62
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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.