Finding the Fourth Proportional to 1,279,133,344.56, 1,918,409,954.47 and 579,163,394.14
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Solution
The fourth proportional to 1,279,133,344.56, 1,918,409,954.47 and 579,163,394.14 is: 868,613,757.36
Step by Step Solution
- Step 1: Write the proportion equation
1,279,133,344.56 : 1,918,409,954.47 = 579,163,394.14 : x - Step 2: Convert to fraction form
1,279,133,344.56/1,918,409,954.47 = 579,163,394.14/x - Step 3: Cross multiply
1,279,133,344.56x = 1,918,409,954.47 × 579,163,394.14 - Step 4: Simplify right side
1,279,133,344.56x = 1,111,072,820,582,808,064 - Step 5: Solve for x
x = 1,111,072,820,582,808,064/1,279,133,344.56 - Step 6: Final answer
x = 868,613,757.36
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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.