Finding the Fourth Proportional to 640,361.47, 883,699.68 and 353,881.63
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Solution
The fourth proportional to 640,361.47, 883,699.68 and 353,881.63 is: 488,357.12
Step by Step Solution
- Step 1: Write the proportion equation
640,361.47 : 883,699.68 = 353,881.63 : x - Step 2: Convert to fraction form
640,361.47/883,699.68 = 353,881.63/x - Step 3: Cross multiply
640,361.47x = 883,699.68 × 353,881.63 - Step 4: Simplify right side
640,361.47x = 312,725,083,188.88 - Step 5: Solve for x
x = 312,725,083,188.88/640,361.47 - Step 6: Final answer
x = 488,357.12
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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.