Finding the Fourth Proportional to 691,986.93, 1,038,011.62 and 212,179.68
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Solution
The fourth proportional to 691,986.93, 1,038,011.62 and 212,179.68 is: 318,279.09
Step by Step Solution
- Step 1: Write the proportion equation
691,986.93 : 1,038,011.62 = 212,179.68 : x - Step 2: Convert to fraction form
691,986.93/1,038,011.62 = 212,179.68/x - Step 3: Cross multiply
691,986.93x = 1,038,011.62 × 212,179.68 - Step 4: Simplify right side
691,986.93x = 220,244,973,367.88 - Step 5: Solve for x
x = 220,244,973,367.88/691,986.93 - Step 6: Final answer
x = 318,279.09
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.