Finding the Fourth Proportional to 645,326.96, 890,572.81 and 354,950.81
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Solution
The fourth proportional to 645,326.96, 890,572.81 and 354,950.81 is: 489,843.99
Step by Step Solution
- Step 1: Write the proportion equation
645,326.96 : 890,572.81 = 354,950.81 : x - Step 2: Convert to fraction form
645,326.96/890,572.81 = 354,950.81/x - Step 3: Cross multiply
645,326.96x = 890,572.81 × 354,950.81 - Step 4: Simplify right side
645,326.96x = 316,109,535,820.61 - Step 5: Solve for x
x = 316,109,535,820.61/645,326.96 - Step 6: Final answer
x = 489,843.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.