Finding the Fourth Proportional to 691,564.64, 954,376.12 and 385,638.08
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Solution
The fourth proportional to 691,564.64, 954,376.12 and 385,638.08 is: 532,189.98
Step by Step Solution
- Step 1: Write the proportion equation
691,564.64 : 954,376.12 = 385,638.08 : x - Step 2: Convert to fraction form
691,564.64/954,376.12 = 385,638.08/x - Step 3: Cross multiply
691,564.64x = 954,376.12 × 385,638.08 - Step 4: Simplify right side
691,564.64x = 368,043,774,514.65 - Step 5: Solve for x
x = 368,043,774,514.65/691,564.64 - Step 6: Final answer
x = 532,189.98
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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.