Finding the Fourth Proportional to 919,915,565.20, 1,379,873,347.80 and 273,683,309.20
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Solution
The fourth proportional to 919,915,565.20, 1,379,873,347.80 and 273,683,309.20 is: 410,524,963.80
Step by Step Solution
- Step 1: Write the proportion equation
919,915,565.20 : 1,379,873,347.80 = 273,683,309.20 : x - Step 2: Convert to fraction form
919,915,565.20/1,379,873,347.80 = 273,683,309.20/x - Step 3: Cross multiply
919,915,565.20x = 1,379,873,347.80 × 273,683,309.20 - Step 4: Simplify right side
919,915,565.20x = 377,648,304,102,786,496 - Step 5: Solve for x
x = 377,648,304,102,786,496/919,915,565.20 - Step 6: Final answer
x = 410,524,963.80
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Similar ratio
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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.