Finding the Fourth Proportional to 19,831,519.20, 29,747,278.80 and 19,831,519.20
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Solution
The fourth proportional to 19,831,519.20, 29,747,278.80 and 19,831,519.20 is: 29,747,278.80
Step by Step Solution
- Step 1: Write the proportion equation
19,831,519.20 : 29,747,278.80 = 19,831,519.20 : x - Step 2: Convert to fraction form
19,831,519.20/29,747,278.80 = 19,831,519.20/x - Step 3: Cross multiply
19,831,519.20x = 29,747,278.80 × 19,831,519.20 - Step 4: Simplify right side
19,831,519.20x = 589,933,730,669,953 - Step 5: Solve for x
x = 589,933,730,669,953/19,831,519.20 - Step 6: Final answer
x = 29,747,278.80
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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.