Finding the Fourth Proportional to 687,453,174,489.70, 948,735,521,616.41 and 398,496,033,236.28
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Solution
The fourth proportional to 687,453,174,489.70, 948,735,521,616.41 and 398,496,033,236.28 is: 549,953,590,999.32
Step by Step Solution
- Step 1: Write the proportion equation
687,453,174,489.70 : 948,735,521,616.41 = 398,496,033,236.28 : x - Step 2: Convert to fraction form
687,453,174,489.70/948,735,521,616.41 = 398,496,033,236.28/x - Step 3: Cross multiply
687,453,174,489.70x = 948,735,521,616.41 × 398,496,033,236.28 - Step 4: Simplify right side
687,453,174,489.70x = 378,067,341,954,492,395,421,696 - Step 5: Solve for x
x = 378,067,341,954,492,395,421,696/687,453,174,489.70 - Step 6: Final answer
x = 549,953,590,999.32
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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.