Finding the Fourth Proportional to 645,375.07, 890,512.81 and 358,887.79
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Solution
The fourth proportional to 645,375.07, 890,512.81 and 358,887.79 is: 495,206.88
Step by Step Solution
- Step 1: Write the proportion equation
645,375.07 : 890,512.81 = 358,887.79 : x - Step 2: Convert to fraction form
645,375.07/890,512.81 = 358,887.79/x - Step 3: Cross multiply
645,375.07x = 890,512.81 × 358,887.79 - Step 4: Simplify right side
645,375.07x = 319,594,174,347.59 - Step 5: Solve for x
x = 319,594,174,347.59/645,375.07 - Step 6: Final answer
x = 495,206.88
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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.