Finding the Fourth Proportional to 665,331.91, 918,166.80 and 378,853.14
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Solution
The fourth proportional to 665,331.91, 918,166.80 and 378,853.14 is: 522,822.32
Step by Step Solution
- Step 1: Write the proportion equation
665,331.91 : 918,166.80 = 378,853.14 : x - Step 2: Convert to fraction form
665,331.91/918,166.80 = 378,853.14/x - Step 3: Cross multiply
665,331.91x = 918,166.80 × 378,853.14 - Step 4: Simplify right side
665,331.91x = 347,850,370,632.92 - Step 5: Solve for x
x = 347,850,370,632.92/665,331.91 - Step 6: Final answer
x = 522,822.32
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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.