Finding the Fourth Proportional to 645,328.36, 890,573.70 and 358,860.52
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Solution
The fourth proportional to 645,328.36, 890,573.70 and 358,860.52 is: 495,238.95
Step by Step Solution
- Step 1: Write the proportion equation
645,328.36 : 890,573.70 = 358,860.52 : x - Step 2: Convert to fraction form
645,328.36/890,573.70 = 358,860.52/x - Step 3: Cross multiply
645,328.36x = 890,573.70 × 358,860.52 - Step 4: Simplify right side
645,328.36x = 319,591,741,080.32 - Step 5: Solve for x
x = 319,591,741,080.32/645,328.36 - Step 6: Final answer
x = 495,238.95
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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.