Finding the Fourth Proportional to 1,289,136,376.68, 1,932,912,660.09 and 501,271,663.63
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Solution
The fourth proportional to 1,289,136,376.68, 1,932,912,660.09 and 501,271,663.63 is: 751,599,568.74
Step by Step Solution
- Step 1: Write the proportion equation
1,289,136,376.68 : 1,932,912,660.09 = 501,271,663.63 : x - Step 2: Convert to fraction form
1,289,136,376.68/1,932,912,660.09 = 501,271,663.63/x - Step 3: Cross multiply
1,289,136,376.68x = 1,932,912,660.09 × 501,271,663.63 - Step 4: Simplify right side
1,289,136,376.68x = 968,914,344,765,138,432 - Step 5: Solve for x
x = 968,914,344,765,138,432/1,289,136,376.68 - Step 6: Final answer
x = 751,599,568.74
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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.