Finding the Fourth Proportional to 621,146.34, 931,938.12 and 305,824.68
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Solution
The fourth proportional to 621,146.34, 931,938.12 and 305,824.68 is: 458,844.65
Step by Step Solution
- Step 1: Write the proportion equation
621,146.34 : 931,938.12 = 305,824.68 : x - Step 2: Convert to fraction form
621,146.34/931,938.12 = 305,824.68/x - Step 3: Cross multiply
621,146.34x = 931,938.12 × 305,824.68 - Step 4: Simplify right side
621,146.34x = 285,009,677,328.80 - Step 5: Solve for x
x = 285,009,677,328.80/621,146.34 - Step 6: Final answer
x = 458,844.65
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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.