Finding the Fourth Proportional to 645,332.64, 890,580.68 and 354,956.48
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Solution
The fourth proportional to 645,332.64, 890,580.68 and 354,956.48 is: 489,851.84
Step by Step Solution
- Step 1: Write the proportion equation
645,332.64 : 890,580.68 = 354,956.48 : x - Step 2: Convert to fraction form
645,332.64/890,580.68 = 354,956.48/x - Step 3: Cross multiply
645,332.64x = 890,580.68 × 354,956.48 - Step 4: Simplify right side
645,332.64x = 316,117,383,328.81 - Step 5: Solve for x
x = 316,117,383,328.81/645,332.64 - Step 6: Final answer
x = 489,851.84
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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.