Finding the Fourth Proportional to 510,174,485.70, 765,261,728.55 and 408,137,813.70
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Solution
The fourth proportional to 510,174,485.70, 765,261,728.55 and 408,137,813.70 is: 612,206,720.55
Step by Step Solution
- Step 1: Write the proportion equation
510,174,485.70 : 765,261,728.55 = 408,137,813.70 : x - Step 2: Convert to fraction form
510,174,485.70/765,261,728.55 = 408,137,813.70/x - Step 3: Cross multiply
510,174,485.70x = 765,261,728.55 × 408,137,813.70 - Step 4: Simplify right side
510,174,485.70x = 312,332,248,798,679,872 - Step 5: Solve for x
x = 312,332,248,798,679,872/510,174,485.70 - Step 6: Final answer
x = 612,206,720.55
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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.