Finding the Fourth Proportional to 645,313.55, 890,496.12 and 358,827.48
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Solution
The fourth proportional to 645,313.55, 890,496.12 and 358,827.48 is: 495,161.58
Step by Step Solution
- Step 1: Write the proportion equation
645,313.55 : 890,496.12 = 358,827.48 : x - Step 2: Convert to fraction form
645,313.55/890,496.12 = 358,827.48/x - Step 3: Cross multiply
645,313.55x = 890,496.12 × 358,827.48 - Step 4: Simplify right side
645,313.55x = 319,534,476,895.24 - Step 5: Solve for x
x = 319,534,476,895.24/645,313.55 - Step 6: Final answer
x = 495,161.58
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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.