Finding the Fourth Proportional to 1,236,604,566.80, 1,854,906,850.20 and 418,716,867.80
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Solution
The fourth proportional to 1,236,604,566.80, 1,854,906,850.20 and 418,716,867.80 is: 628,075,301.70
Step by Step Solution
- Step 1: Write the proportion equation
1,236,604,566.80 : 1,854,906,850.20 = 418,716,867.80 : x - Step 2: Convert to fraction form
1,236,604,566.80/1,854,906,850.20 = 418,716,867.80/x - Step 3: Cross multiply
1,236,604,566.80x = 1,854,906,850.20 × 418,716,867.80 - Step 4: Simplify right side
1,236,604,566.80x = 776,680,786,376,507,904 - Step 5: Solve for x
x = 776,680,786,376,507,904/1,236,604,566.80 - Step 6: Final answer
x = 628,075,301.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.