Finding the Fourth Proportional to 712,362.10, 1,068,742.92 and 286,197.18
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Solution
The fourth proportional to 712,362.10, 1,068,742.92 and 286,197.18 is: 429,376.03
Step by Step Solution
- Step 1: Write the proportion equation
712,362.10 : 1,068,742.92 = 286,197.18 : x - Step 2: Convert to fraction form
712,362.10/1,068,742.92 = 286,197.18/x - Step 3: Cross multiply
712,362.10x = 1,068,742.92 × 286,197.18 - Step 4: Simplify right side
712,362.10x = 305,871,210,511.31 - Step 5: Solve for x
x = 305,871,210,511.31/712,362.10 - Step 6: Final answer
x = 429,376.03
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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.