Finding the Fourth Proportional to 1,540,623,022.79, 2,312,428,898.68 and 743,501,126.72
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Solution
The fourth proportional to 1,540,623,022.79, 2,312,428,898.68 and 743,501,126.72 is: 1,115,972,866.95
Step by Step Solution
- Step 1: Write the proportion equation
1,540,623,022.79 : 2,312,428,898.68 = 743,501,126.72 : x - Step 2: Convert to fraction form
1,540,623,022.79/2,312,428,898.68 = 743,501,126.72/x - Step 3: Cross multiply
1,540,623,022.79x = 2,312,428,898.68 × 743,501,126.72 - Step 4: Simplify right side
1,540,623,022.79x = 1,719,293,491,632,465,152 - Step 5: Solve for x
x = 1,719,293,491,632,465,152/1,540,623,022.79 - Step 6: Final answer
x = 1,115,972,866.95
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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.