Finding the Fourth Proportional to 665,742.96, 919,206.36 and 411,442.80
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Solution
The fourth proportional to 665,742.96, 919,206.36 and 411,442.80 is: 568,088.38
Step by Step Solution
- Step 1: Write the proportion equation
665,742.96 : 919,206.36 = 411,442.80 : x - Step 2: Convert to fraction form
665,742.96/919,206.36 = 411,442.80/x - Step 3: Cross multiply
665,742.96x = 919,206.36 × 411,442.80 - Step 4: Simplify right side
665,742.96x = 378,200,838,536.21 - Step 5: Solve for x
x = 378,200,838,536.21/665,742.96 - Step 6: Final answer
x = 568,088.38
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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.