Finding the Fourth Proportional to 948,138.93, 1,421,911.92 and 316,905.12
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Solution
The fourth proportional to 948,138.93, 1,421,911.92 and 316,905.12 is: 475,258.59
Step by Step Solution
- Step 1: Write the proportion equation
948,138.93 : 1,421,911.92 = 316,905.12 : x - Step 2: Convert to fraction form
948,138.93/1,421,911.92 = 316,905.12/x - Step 3: Cross multiply
948,138.93x = 1,421,911.92 × 316,905.12 - Step 4: Simplify right side
948,138.93x = 450,611,167,637.03 - Step 5: Solve for x
x = 450,611,167,637.03/948,138.93 - Step 6: Final answer
x = 475,258.59
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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.