Finding the Fourth Proportional to 813,639.18, 1,220,011.64 and 646,231.62
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Solution
The fourth proportional to 813,639.18, 1,220,011.64 and 646,231.62 is: 968,992.30
Step by Step Solution
- Step 1: Write the proportion equation
813,639.18 : 1,220,011.64 = 646,231.62 : x - Step 2: Convert to fraction form
813,639.18/1,220,011.64 = 646,231.62/x - Step 3: Cross multiply
813,639.18x = 1,220,011.64 × 646,231.62 - Step 4: Simplify right side
813,639.18x = 788,410,098,536.06 - Step 5: Solve for x
x = 788,410,098,536.06/813,639.18 - Step 6: Final answer
x = 968,992.30
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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.