Finding the Fourth Proportional to 472,393,315.20, 708,589,972.80 and 127,334,578.80
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Solution
The fourth proportional to 472,393,315.20, 708,589,972.80 and 127,334,578.80 is: 191,001,868.20
Step by Step Solution
- Step 1: Write the proportion equation
472,393,315.20 : 708,589,972.80 = 127,334,578.80 : x - Step 2: Convert to fraction form
472,393,315.20/708,589,972.80 = 127,334,578.80/x - Step 3: Cross multiply
472,393,315.20x = 708,589,972.80 × 127,334,578.80 - Step 4: Simplify right side
472,393,315.20x = 90,228,005,728,391,456 - Step 5: Solve for x
x = 90,228,005,728,391,456/472,393,315.20 - Step 6: Final answer
x = 191,001,868.20
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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.