Finding the Fourth Proportional to 497,987.68, 687,195.12 and 283,097.92
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Solution
The fourth proportional to 497,987.68, 687,195.12 and 283,097.92 is: 390,659.28
Step by Step Solution
- Step 1: Write the proportion equation
497,987.68 : 687,195.12 = 283,097.92 : x - Step 2: Convert to fraction form
497,987.68/687,195.12 = 283,097.92/x - Step 3: Cross multiply
497,987.68x = 687,195.12 × 283,097.92 - Step 4: Simplify right side
497,987.68x = 194,543,509,106.15 - Step 5: Solve for x
x = 194,543,509,106.15/497,987.68 - Step 6: Final answer
x = 390,659.28
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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.