Finding the Fourth Proportional to 906,480,239.54, 1,247,920,850.39 and 864,832,536.95
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Solution
The fourth proportional to 906,480,239.54, 1,247,920,850.39 and 864,832,536.95 is: 1,190,585,859.32
Step by Step Solution
- Step 1: Write the proportion equation
906,480,239.54 : 1,247,920,850.39 = 864,832,536.95 : x - Step 2: Convert to fraction form
906,480,239.54/1,247,920,850.39 = 864,832,536.95/x - Step 3: Cross multiply
906,480,239.54x = 1,247,920,850.39 × 864,832,536.95 - Step 4: Simplify right side
906,480,239.54x = 1,079,242,554,945,021,440 - Step 5: Solve for x
x = 1,079,242,554,945,021,440/906,480,239.54 - Step 6: Final answer
x = 1,190,585,859.32
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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.