Finding the Fourth Proportional to 1,145,536,474.80, 1,718,304,712.20 and 418,430,708.40
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Solution
The fourth proportional to 1,145,536,474.80, 1,718,304,712.20 and 418,430,708.40 is: 627,646,062.60
Step by Step Solution
- Step 1: Write the proportion equation
1,145,536,474.80 : 1,718,304,712.20 = 418,430,708.40 : x - Step 2: Convert to fraction form
1,145,536,474.80/1,718,304,712.20 = 418,430,708.40/x - Step 3: Cross multiply
1,145,536,474.80x = 1,718,304,712.20 × 418,430,708.40 - Step 4: Simplify right side
1,145,536,474.80x = 718,991,457,972,904,064 - Step 5: Solve for x
x = 718,991,457,972,904,064/1,145,536,474.80 - Step 6: Final answer
x = 627,646,062.60
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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.