Finding the Fourth Proportional to 521,669.76, 719,893.44 and 283,205.76
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Solution
The fourth proportional to 521,669.76, 719,893.44 and 283,205.76 is: 390,818.07
Step by Step Solution
- Step 1: Write the proportion equation
521,669.76 : 719,893.44 = 283,205.76 : x - Step 2: Convert to fraction form
521,669.76/719,893.44 = 283,205.76/x - Step 3: Cross multiply
521,669.76x = 719,893.44 × 283,205.76 - Step 4: Simplify right side
521,669.76x = 203,877,968,794.21 - Step 5: Solve for x
x = 203,877,968,794.21/521,669.76 - Step 6: Final answer
x = 390,818.07
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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.