Finding the Fourth Proportional to 640,184.68, 883,490.30 and 353,698.62
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Solution
The fourth proportional to 640,184.68, 883,490.30 and 353,698.62 is: 488,123.68
Step by Step Solution
- Step 1: Write the proportion equation
640,184.68 : 883,490.30 = 353,698.62 : x - Step 2: Convert to fraction form
640,184.68/883,490.30 = 353,698.62/x - Step 3: Cross multiply
640,184.68x = 883,490.30 × 353,698.62 - Step 4: Simplify right side
640,184.68x = 312,489,299,893.39 - Step 5: Solve for x
x = 312,489,299,893.39/640,184.68 - Step 6: Final answer
x = 488,123.68
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1.5x scale
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.