Finding the Fourth Proportional to 639,576,350.10, 959,364,525.15 and 536,264,219.70
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Solution
The fourth proportional to 639,576,350.10, 959,364,525.15 and 536,264,219.70 is: 804,396,329.55
Step by Step Solution
- Step 1: Write the proportion equation
639,576,350.10 : 959,364,525.15 = 536,264,219.70 : x - Step 2: Convert to fraction form
639,576,350.10/959,364,525.15 = 536,264,219.70/x - Step 3: Cross multiply
639,576,350.10x = 959,364,525.15 × 536,264,219.70 - Step 4: Simplify right side
639,576,350.10x = 514,472,868,487,425,728 - Step 5: Solve for x
x = 514,472,868,487,425,728/639,576,350.10 - Step 6: Final answer
x = 804,396,329.55
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Double scale
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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.