Finding the Fourth Proportional to 646,245.18, 891,789.58 and 370,405.30
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Solution
The fourth proportional to 646,245.18, 891,789.58 and 370,405.30 is: 511,142.82
Step by Step Solution
- Step 1: Write the proportion equation
646,245.18 : 891,789.58 = 370,405.30 : x - Step 2: Convert to fraction form
646,245.18/891,789.58 = 370,405.30/x - Step 3: Cross multiply
646,245.18x = 891,789.58 × 370,405.30 - Step 4: Simplify right side
646,245.18x = 330,323,583,761.29 - Step 5: Solve for x
x = 330,323,583,761.29/646,245.18 - Step 6: Final answer
x = 511,142.82
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.