Finding the Fourth Proportional to 18,982,031,970.31, 28,479,377,450.45 and 12,625,628,102.99
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Solution
The fourth proportional to 18,982,031,970.31, 28,479,377,450.45 and 12,625,628,102.99 is: 18,942,652,127.89
Step by Step Solution
- Step 1: Write the proportion equation
18,982,031,970.31 : 28,479,377,450.45 = 12,625,628,102.99 : x - Step 2: Convert to fraction form
18,982,031,970.31/28,479,377,450.45 = 12,625,628,102.99/x - Step 3: Cross multiply
18,982,031,970.31x = 28,479,377,450.45 × 12,625,628,102.99 - Step 4: Simplify right side
18,982,031,970.31x = 359,570,028,294,058,016,768 - Step 5: Solve for x
x = 359,570,028,294,058,016,768/18,982,031,970.31 - Step 6: Final answer
x = 18,942,652,127.89
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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.