Finding the Fourth Proportional to 1,212,571,237.20, 1,818,856,855.80 and 1,090,127,230.80
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Solution
The fourth proportional to 1,212,571,237.20, 1,818,856,855.80 and 1,090,127,230.80 is: 1,635,190,846.20
Step by Step Solution
- Step 1: Write the proportion equation
1,212,571,237.20 : 1,818,856,855.80 = 1,090,127,230.80 : x - Step 2: Convert to fraction form
1,212,571,237.20/1,818,856,855.80 = 1,090,127,230.80/x - Step 3: Cross multiply
1,212,571,237.20x = 1,818,856,855.80 × 1,090,127,230.80 - Step 4: Simplify right side
1,212,571,237.20x = 1,982,785,387,434,848,768 - Step 5: Solve for x
x = 1,982,785,387,434,848,768/1,212,571,237.20 - Step 6: Final answer
x = 1,635,190,846.20
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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.