Finding the Fourth Proportional to 645,239.34, 890,425.35 and 358,756.92
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Solution
The fourth proportional to 645,239.34, 890,425.35 and 358,756.92 is: 495,081.80
Step by Step Solution
- Step 1: Write the proportion equation
645,239.34 : 890,425.35 = 358,756.92 : x - Step 2: Convert to fraction form
645,239.34/890,425.35 = 358,756.92/x - Step 3: Cross multiply
645,239.34x = 890,425.35 × 358,756.92 - Step 4: Simplify right side
645,239.34x = 319,446,256,055.92 - Step 5: Solve for x
x = 319,446,256,055.92/645,239.34 - Step 6: Final answer
x = 495,081.80
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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.