Finding the Fourth Proportional to 665,582.12, 918,397.14 and 379,107.80
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Solution
The fourth proportional to 665,582.12, 918,397.14 and 379,107.80 is: 523,108.28
Step by Step Solution
- Step 1: Write the proportion equation
665,582.12 : 918,397.14 = 379,107.80 : x - Step 2: Convert to fraction form
665,582.12/918,397.14 = 379,107.80/x - Step 3: Cross multiply
665,582.12x = 918,397.14 × 379,107.80 - Step 4: Simplify right side
665,582.12x = 348,171,519,271.69 - Step 5: Solve for x
x = 348,171,519,271.69/665,582.12 - Step 6: Final answer
x = 523,108.28
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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.