Finding the Fourth Proportional to 429,736.23, 643,993.07 and 316,526.18
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Solution
The fourth proportional to 429,736.23, 643,993.07 and 316,526.18 is: 474,339.02
Step by Step Solution
- Step 1: Write the proportion equation
429,736.23 : 643,993.07 = 316,526.18 : x - Step 2: Convert to fraction form
429,736.23/643,993.07 = 316,526.18/x - Step 3: Cross multiply
429,736.23x = 643,993.07 × 316,526.18 - Step 4: Simplify right side
429,736.23x = 203,840,661,590.98 - Step 5: Solve for x
x = 203,840,661,590.98/429,736.23 - Step 6: Final answer
x = 474,339.02
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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.