Finding the Fourth Proportional to 645,389.24, 890,568.94 and 358,863.08
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Solution
The fourth proportional to 645,389.24, 890,568.94 and 358,863.08 is: 495,193.12
Step by Step Solution
- Step 1: Write the proportion equation
645,389.24 : 890,568.94 = 358,863.08 : x - Step 2: Convert to fraction form
645,389.24/890,568.94 = 358,863.08/x - Step 3: Cross multiply
645,389.24x = 890,568.94 × 358,863.08 - Step 4: Simplify right side
645,389.24x = 319,592,312,760.74 - Step 5: Solve for x
x = 319,592,312,760.74/645,389.24 - Step 6: Final answer
x = 495,193.12
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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.