Finding the Fourth Proportional to 645,332.84, 890,580.91 and 354,956.68
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Solution
The fourth proportional to 645,332.84, 890,580.91 and 354,956.68 is: 489,852.09
Step by Step Solution
- Step 1: Write the proportion equation
645,332.84 : 890,580.91 = 354,956.68 : x - Step 2: Convert to fraction form
645,332.84/890,580.91 = 354,956.68/x - Step 3: Cross multiply
645,332.84x = 890,580.91 × 354,956.68 - Step 4: Simplify right side
645,332.84x = 316,117,638,632.07 - Step 5: Solve for x
x = 316,117,638,632.07/645,332.84 - Step 6: Final answer
x = 489,852.09
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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.