Finding the Fourth Proportional to 617,438.36, 851,248.14 and 445,212.20
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Solution
The fourth proportional to 617,438.36, 851,248.14 and 445,212.20 is: 613,803.87
Step by Step Solution
- Step 1: Write the proportion equation
617,438.36 : 851,248.14 = 445,212.20 : x - Step 2: Convert to fraction form
617,438.36/851,248.14 = 445,212.20/x - Step 3: Cross multiply
617,438.36x = 851,248.14 × 445,212.20 - Step 4: Simplify right side
617,438.36x = 378,986,057,155.31 - Step 5: Solve for x
x = 378,986,057,155.31/617,438.36 - Step 6: Final answer
x = 613,803.87
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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.