Finding the Fourth Proportional to 645,457.70, 890,743.08 and 358,977.92
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Solution
The fourth proportional to 645,457.70, 890,743.08 and 358,977.92 is: 495,395.90
Step by Step Solution
- Step 1: Write the proportion equation
645,457.70 : 890,743.08 = 358,977.92 : x - Step 2: Convert to fraction form
645,457.70/890,743.08 = 358,977.92/x - Step 3: Cross multiply
645,457.70x = 890,743.08 × 358,977.92 - Step 4: Simplify right side
645,457.70x = 319,757,093,659.08 - Step 5: Solve for x
x = 319,757,093,659.08/645,457.70 - Step 6: Final answer
x = 495,395.90
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.