Finding the Fourth Proportional to 1,440,508,870.18, 1,987,293,524.73 and 964,352,649.03
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Solution
The fourth proportional to 1,440,508,870.18, 1,987,293,524.73 and 964,352,649.03 is: 1,330,399,148.99
Step by Step Solution
- Step 1: Write the proportion equation
1,440,508,870.18 : 1,987,293,524.73 = 964,352,649.03 : x - Step 2: Convert to fraction form
1,440,508,870.18/1,987,293,524.73 = 964,352,649.03/x - Step 3: Cross multiply
1,440,508,870.18x = 1,987,293,524.73 × 964,352,649.03 - Step 4: Simplify right side
1,440,508,870.18x = 1,916,451,774,987,374,336 - Step 5: Solve for x
x = 1,916,451,774,987,374,336/1,440,508,870.18 - Step 6: Final answer
x = 1,330,399,148.99
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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.