Finding the Fourth Proportional to 764,439.91, 1,054,927.75 and 420,281.70
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Solution
The fourth proportional to 764,439.91, 1,054,927.75 and 420,281.70 is: 579,989.12
Step by Step Solution
- Step 1: Write the proportion equation
764,439.91 : 1,054,927.75 = 420,281.70 : x - Step 2: Convert to fraction form
764,439.91/1,054,927.75 = 420,281.70/x - Step 3: Cross multiply
764,439.91x = 1,054,927.75 × 420,281.70 - Step 4: Simplify right side
764,439.91x = 443,366,828,147.18 - Step 5: Solve for x
x = 443,366,828,147.18/764,439.91 - Step 6: Final answer
x = 579,989.12
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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.