Finding the Fourth Proportional to 678,620,489.80, 1,017,930,734.70 and 334,246,721.80
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Solution
The fourth proportional to 678,620,489.80, 1,017,930,734.70 and 334,246,721.80 is: 501,370,082.70
Step by Step Solution
- Step 1: Write the proportion equation
678,620,489.80 : 1,017,930,734.70 = 334,246,721.80 : x - Step 2: Convert to fraction form
678,620,489.80/1,017,930,734.70 = 334,246,721.80/x - Step 3: Cross multiply
678,620,489.80x = 1,017,930,734.70 × 334,246,721.80 - Step 4: Simplify right side
678,620,489.80x = 340,240,011,092,940,544 - Step 5: Solve for x
x = 340,240,011,092,940,544/678,620,489.80 - Step 6: Final answer
x = 501,370,082.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.