Finding the Fourth Proportional to 641,417.16, 885,142.44 and 354,937.08
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Solution
The fourth proportional to 641,417.16, 885,142.44 and 354,937.08 is: 489,805.84
Step by Step Solution
- Step 1: Write the proportion equation
641,417.16 : 885,142.44 = 354,937.08 : x - Step 2: Convert to fraction form
641,417.16/885,142.44 = 354,937.08/x - Step 3: Cross multiply
641,417.16x = 885,142.44 × 354,937.08 - Step 4: Simplify right side
641,417.16x = 314,169,873,037.68 - Step 5: Solve for x
x = 314,169,873,037.68/641,417.16 - Step 6: Final answer
x = 489,805.84
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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.