Finding the Fourth Proportional to 1,259,714,279.20, 1,889,571,418.80 and 848,544,282.40
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Solution
The fourth proportional to 1,259,714,279.20, 1,889,571,418.80 and 848,544,282.40 is: 1,272,816,423.60
Step by Step Solution
- Step 1: Write the proportion equation
1,259,714,279.20 : 1,889,571,418.80 = 848,544,282.40 : x - Step 2: Convert to fraction form
1,259,714,279.20/1,889,571,418.80 = 848,544,282.40/x - Step 3: Cross multiply
1,259,714,279.20x = 1,889,571,418.80 × 848,544,282.40 - Step 4: Simplify right side
1,259,714,279.20x = 1,603,385,023,609,195,776 - Step 5: Solve for x
x = 1,603,385,023,609,195,776/1,259,714,279.20 - Step 6: Final answer
x = 1,272,816,423.60
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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.