Finding the Fourth Proportional to 427,809.25, 640,791.33 and 402,656.63
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Solution
The fourth proportional to 427,809.25, 640,791.33 and 402,656.63 is: 603,116.63
Step by Step Solution
- Step 1: Write the proportion equation
427,809.25 : 640,791.33 = 402,656.63 : x - Step 2: Convert to fraction form
427,809.25/640,791.33 = 402,656.63/x - Step 3: Cross multiply
427,809.25x = 640,791.33 × 402,656.63 - Step 4: Simplify right side
427,809.25x = 258,018,874,756.18 - Step 5: Solve for x
x = 258,018,874,756.18/427,809.25 - Step 6: Final answer
x = 603,116.63
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.