Finding the Fourth Proportional to 487,192.68, 671,992.30 and 317,656.44
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Solution
The fourth proportional to 487,192.68, 671,992.30 and 317,656.44 is: 438,148.38
Step by Step Solution
- Step 1: Write the proportion equation
487,192.68 : 671,992.30 = 317,656.44 : x - Step 2: Convert to fraction form
487,192.68/671,992.30 = 317,656.44/x - Step 3: Cross multiply
487,192.68x = 671,992.30 × 317,656.44 - Step 4: Simplify right side
487,192.68x = 213,462,681,725.41 - Step 5: Solve for x
x = 213,462,681,725.41/487,192.68 - Step 6: Final answer
x = 438,148.38
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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.