Finding the Fourth Proportional to 641,869.35, 885,807.36 and 355,389.42
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Solution
The fourth proportional to 641,869.35, 885,807.36 and 355,389.42 is: 490,452.71
Step by Step Solution
- Step 1: Write the proportion equation
641,869.35 : 885,807.36 = 355,389.42 : x - Step 2: Convert to fraction form
641,869.35/885,807.36 = 355,389.42/x - Step 3: Cross multiply
641,869.35x = 885,807.36 × 355,389.42 - Step 4: Simplify right side
641,869.35x = 314,806,563,902.13 - Step 5: Solve for x
x = 314,806,563,902.13/641,869.35 - Step 6: Final answer
x = 490,452.71
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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.