Finding the Fourth Proportional to 640,267.94, 883,563.49 and 353,781.88
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Solution
The fourth proportional to 640,267.94, 883,563.49 and 353,781.88 is: 488,215.53
Step by Step Solution
- Step 1: Write the proportion equation
640,267.94 : 883,563.49 = 353,781.88 : x - Step 2: Convert to fraction form
640,267.94/883,563.49 = 353,781.88/x - Step 3: Cross multiply
640,267.94x = 883,563.49 × 353,781.88 - Step 4: Simplify right side
640,267.94x = 312,588,750,824.88 - Step 5: Solve for x
x = 312,588,750,824.88/640,267.94 - Step 6: Final answer
x = 488,215.53
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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.