Finding the Fourth Proportional to 645,223.05, 890,403.17 and 358,740.63
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Solution
The fourth proportional to 645,223.05, 890,403.17 and 358,740.63 is: 495,059.49
Step by Step Solution
- Step 1: Write the proportion equation
645,223.05 : 890,403.17 = 358,740.63 : x - Step 2: Convert to fraction form
645,223.05/890,403.17 = 358,740.63/x - Step 3: Cross multiply
645,223.05x = 890,403.17 × 358,740.63 - Step 4: Simplify right side
645,223.05x = 319,423,792,366.09 - Step 5: Solve for x
x = 319,423,792,366.09/645,223.05 - Step 6: Final answer
x = 495,059.49
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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.