Finding the Fourth Proportional to 1,298,631,493.16, 1,792,063,448.99 and 703,903,208.49
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Solution
The fourth proportional to 1,298,631,493.16, 1,792,063,448.99 and 703,903,208.49 is: 971,360,403.78
Step by Step Solution
- Step 1: Write the proportion equation
1,298,631,493.16 : 1,792,063,448.99 = 703,903,208.49 : x - Step 2: Convert to fraction form
1,298,631,493.16/1,792,063,448.99 = 703,903,208.49/x - Step 3: Cross multiply
1,298,631,493.16x = 1,792,063,448.99 × 703,903,208.49 - Step 4: Simplify right side
1,298,631,493.16x = 1,261,439,211,558,196,992 - Step 5: Solve for x
x = 1,261,439,211,558,196,992/1,298,631,493.16 - Step 6: Final answer
x = 971,360,403.78
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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.