Finding the Fourth Proportional to 640,693.68, 884,113.92 and 354,175.08
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Solution
The fourth proportional to 640,693.68, 884,113.92 and 354,175.08 is: 488,737.64
Step by Step Solution
- Step 1: Write the proportion equation
640,693.68 : 884,113.92 = 354,175.08 : x - Step 2: Convert to fraction form
640,693.68/884,113.92 = 354,175.08/x - Step 3: Cross multiply
640,693.68x = 884,113.92 × 354,175.08 - Step 4: Simplify right side
640,693.68x = 313,131,118,345.11 - Step 5: Solve for x
x = 313,131,118,345.11/640,693.68 - Step 6: Final answer
x = 488,737.64
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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.