Finding the Fourth Proportional to 928,942.08, 1,281,990.88 and 521,173.12
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Solution
The fourth proportional to 928,942.08, 1,281,990.88 and 521,173.12 is: 719,247.41
Step by Step Solution
- Step 1: Write the proportion equation
928,942.08 : 1,281,990.88 = 521,173.12 : x - Step 2: Convert to fraction form
928,942.08/1,281,990.88 = 521,173.12/x - Step 3: Cross multiply
928,942.08x = 1,281,990.88 × 521,173.12 - Step 4: Simplify right side
928,942.08x = 668,139,186,741.15 - Step 5: Solve for x
x = 668,139,186,741.15/928,942.08 - Step 6: Final answer
x = 719,247.41
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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.