Finding the Fourth Proportional to 621,122.40, 931,682.88 and 194,661.12
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Solution
The fourth proportional to 621,122.40, 931,682.88 and 194,661.12 is: 291,991.45
Step by Step Solution
- Step 1: Write the proportion equation
621,122.40 : 931,682.88 = 194,661.12 : x - Step 2: Convert to fraction form
621,122.40/931,682.88 = 194,661.12/x - Step 3: Cross multiply
621,122.40x = 931,682.88 × 194,661.12 - Step 4: Simplify right side
621,122.40x = 181,362,432,905.63 - Step 5: Solve for x
x = 181,362,432,905.63/621,122.40 - Step 6: Final answer
x = 291,991.45
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1.5x scale
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.