Finding the Fourth Proportional to 665,358.36, 918,193.64 and 378,878.45
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Solution
The fourth proportional to 665,358.36, 918,193.64 and 378,878.45 is: 522,851.74
Step by Step Solution
- Step 1: Write the proportion equation
665,358.36 : 918,193.64 = 378,878.45 : x - Step 2: Convert to fraction form
665,358.36/918,193.64 = 378,878.45/x - Step 3: Cross multiply
665,358.36x = 918,193.64 × 378,878.45 - Step 4: Simplify right side
665,358.36x = 347,883,776,637.70 - Step 5: Solve for x
x = 347,883,776,637.70/665,358.36 - Step 6: Final answer
x = 522,851.74
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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.