Finding the Fourth Proportional to 641,875.30, 885,815.61 and 355,395.40
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Solution
The fourth proportional to 641,875.30, 885,815.61 and 355,395.40 is: 490,460.99
Step by Step Solution
- Step 1: Write the proportion equation
641,875.30 : 885,815.61 = 355,395.40 : x - Step 2: Convert to fraction form
641,875.30/885,815.61 = 355,395.40/x - Step 3: Cross multiply
641,875.30x = 885,815.61 × 355,395.40 - Step 4: Simplify right side
641,875.30x = 314,814,793,042.19 - Step 5: Solve for x
x = 314,814,793,042.19/641,875.30 - Step 6: Final answer
x = 490,460.99
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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.