Finding the Fourth Proportional to 680,783.44, 939,607.12 and 394,303.44
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Solution
The fourth proportional to 680,783.44, 939,607.12 and 394,303.44 is: 544,211.71
Step by Step Solution
- Step 1: Write the proportion equation
680,783.44 : 939,607.12 = 394,303.44 : x - Step 2: Convert to fraction form
680,783.44/939,607.12 = 394,303.44/x - Step 3: Cross multiply
680,783.44x = 939,607.12 × 394,303.44 - Step 4: Simplify right side
680,783.44x = 370,490,319,664.49 - Step 5: Solve for x
x = 370,490,319,664.49/680,783.44 - Step 6: Final answer
x = 544,211.71
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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.