Finding the Fourth Proportional to 1,438,939,154.48, 2,158,614,626.36 and 443,044,447.70
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Solution
The fourth proportional to 1,438,939,154.48, 2,158,614,626.36 and 443,044,447.70 is: 664,630,065.81
Step by Step Solution
- Step 1: Write the proportion equation
1,438,939,154.48 : 2,158,614,626.36 = 443,044,447.70 : x - Step 2: Convert to fraction form
1,438,939,154.48/2,158,614,626.36 = 443,044,447.70/x - Step 3: Cross multiply
1,438,939,154.48x = 2,158,614,626.36 × 443,044,447.70 - Step 4: Simplify right side
1,438,939,154.48x = 956,362,224,935,989,376 - Step 5: Solve for x
x = 956,362,224,935,989,376/1,438,939,154.48 - Step 6: Final answer
x = 664,630,065.81
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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.