Finding the Fourth Proportional to 18,438,757.80, 27,658,136.70 and 4,975,564.20
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Solution
The fourth proportional to 18,438,757.80, 27,658,136.70 and 4,975,564.20 is: 7,463,346.30
Step by Step Solution
- Step 1: Write the proportion equation
18,438,757.80 : 27,658,136.70 = 4,975,564.20 : x - Step 2: Convert to fraction form
18,438,757.80/27,658,136.70 = 4,975,564.20/x - Step 3: Cross multiply
18,438,757.80x = 27,658,136.70 × 4,975,564.20 - Step 4: Simplify right side
18,438,757.80x = 137,614,834,803,226.14 - Step 5: Solve for x
x = 137,614,834,803,226.14/18,438,757.80 - Step 6: Final answer
x = 7,463,346.30
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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.