Finding the Fourth Proportional to 645,279.36, 890,506.08 and 358,811.52
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Solution
The fourth proportional to 645,279.36, 890,506.08 and 358,811.52 is: 495,171.33
Step by Step Solution
- Step 1: Write the proportion equation
645,279.36 : 890,506.08 = 358,811.52 : x - Step 2: Convert to fraction form
645,279.36/890,506.08 = 358,811.52/x - Step 3: Cross multiply
645,279.36x = 890,506.08 × 358,811.52 - Step 4: Simplify right side
645,279.36x = 319,523,840,134.04 - Step 5: Solve for x
x = 319,523,840,134.04/645,279.36 - Step 6: Final answer
x = 495,171.33
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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.