Finding the Fourth Proportional to 989,649,369.99, 1,365,636,485.30 and 571,988,707.11
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Solution
The fourth proportional to 989,649,369.99, 1,365,636,485.30 and 571,988,707.11 is: 789,298,383.14
Step by Step Solution
- Step 1: Write the proportion equation
989,649,369.99 : 1,365,636,485.30 = 571,988,707.11 : x - Step 2: Convert to fraction form
989,649,369.99/1,365,636,485.30 = 571,988,707.11/x - Step 3: Cross multiply
989,649,369.99x = 1,365,636,485.30 × 571,988,707.11 - Step 4: Simplify right side
989,649,369.99x = 781,128,647,606,131,584 - Step 5: Solve for x
x = 781,128,647,606,131,584/989,649,369.99 - Step 6: Final answer
x = 789,298,383.14
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.