Finding the Fourth Proportional to 919,220,722.07, 1,378,728,911.33 and 328,987,125.95
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Solution
The fourth proportional to 919,220,722.07, 1,378,728,911.33 and 328,987,125.95 is: 493,444,121.86
Step by Step Solution
- Step 1: Write the proportion equation
919,220,722.07 : 1,378,728,911.33 = 328,987,125.95 : x - Step 2: Convert to fraction form
919,220,722.07/1,378,728,911.33 = 328,987,125.95/x - Step 3: Cross multiply
919,220,722.07x = 1,378,728,911.33 × 328,987,125.95 - Step 4: Simplify right side
919,220,722.07x = 453,584,062,000,984,128 - Step 5: Solve for x
x = 453,584,062,000,984,128/919,220,722.07 - Step 6: Final answer
x = 493,444,121.86
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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.