Finding the Fourth Proportional to 1,365,764,421.63, 2,048,648,109.89 and 639,263,316.99
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Solution
The fourth proportional to 1,365,764,421.63, 2,048,648,109.89 and 639,263,316.99 is: 958,895,667.02
Step by Step Solution
- Step 1: Write the proportion equation
1,365,764,421.63 : 2,048,648,109.89 = 639,263,316.99 : x - Step 2: Convert to fraction form
1,365,764,421.63/2,048,648,109.89 = 639,263,316.99/x - Step 3: Cross multiply
1,365,764,421.63x = 2,048,648,109.89 × 639,263,316.99 - Step 4: Simplify right side
1,365,764,421.63x = 1,309,625,586,070,379,008 - Step 5: Solve for x
x = 1,309,625,586,070,379,008/1,365,764,421.63 - Step 6: Final answer
x = 958,895,667.02
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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.