Finding the Fourth Proportional to 663,964.08, 916,208.91 and 377,428.20
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Solution
The fourth proportional to 663,964.08, 916,208.91 and 377,428.20 is: 520,815.94
Step by Step Solution
- Step 1: Write the proportion equation
663,964.08 : 916,208.91 = 377,428.20 : x - Step 2: Convert to fraction form
663,964.08/916,208.91 = 377,428.20/x - Step 3: Cross multiply
663,964.08x = 916,208.91 × 377,428.20 - Step 4: Simplify right side
663,964.08x = 345,803,079,725.26 - Step 5: Solve for x
x = 345,803,079,725.26/663,964.08 - Step 6: Final answer
x = 520,815.94
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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.