Finding the Fourth Proportional to 645,314.14, 890,496.94 and 358,828.08
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Solution
The fourth proportional to 645,314.14, 890,496.94 and 358,828.08 is: 495,162.41
Step by Step Solution
- Step 1: Write the proportion equation
645,314.14 : 890,496.94 = 358,828.08 : x - Step 2: Convert to fraction form
645,314.14/890,496.94 = 358,828.08/x - Step 3: Cross multiply
645,314.14x = 890,496.94 × 358,828.08 - Step 4: Simplify right side
645,314.14x = 319,535,307,226.08 - Step 5: Solve for x
x = 319,535,307,226.08/645,314.14 - Step 6: Final answer
x = 495,162.41
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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.