Finding the Fourth Proportional to 2,987,666,129.98, 4,481,516,259.27 and 1,240,868,867.56
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Solution
The fourth proportional to 2,987,666,129.98, 4,481,516,259.27 and 1,240,868,867.56 is: 1,861,310,388.66
Step by Step Solution
- Step 1: Write the proportion equation
2,987,666,129.98 : 4,481,516,259.27 = 1,240,868,867.56 : x - Step 2: Convert to fraction form
2,987,666,129.98/4,481,516,259.27 = 1,240,868,867.56/x - Step 3: Cross multiply
2,987,666,129.98x = 4,481,516,259.27 × 1,240,868,867.56 - Step 4: Simplify right side
2,987,666,129.98x = 5,560,974,005,592,092,672 - Step 5: Solve for x
x = 5,560,974,005,592,092,672/2,987,666,129.98 - Step 6: Final answer
x = 1,861,310,388.66
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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.