Finding the Fourth Proportional to 1,398,877,553.74, 1,930,477,894.24 and 763,823,225
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Solution
The fourth proportional to 1,398,877,553.74, 1,930,477,894.24 and 763,823,225 is: 1,054,090,722.26
Step by Step Solution
- Step 1: Write the proportion equation
1,398,877,553.74 : 1,930,477,894.24 = 763,823,225 : x - Step 2: Convert to fraction form
1,398,877,553.74/1,930,477,894.24 = 763,823,225/x - Step 3: Cross multiply
1,398,877,553.74x = 1,930,477,894.24 × 763,823,225 - Step 4: Simplify right side
1,398,877,553.74x = 1,474,543,850,969,605,632 - Step 5: Solve for x
x = 1,474,543,850,969,605,632/1,398,877,553.74 - Step 6: Final answer
x = 1,054,090,722.26
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1.5x scale
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.