Finding the Fourth Proportional to 1,434,988,132.80, 1,980,283,605.12 and 774,938,352.48
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Solution
The fourth proportional to 1,434,988,132.80, 1,980,283,605.12 and 774,938,352.48 is: 1,069,414,916.62
Step by Step Solution
- Step 1: Write the proportion equation
1,434,988,132.80 : 1,980,283,605.12 = 774,938,352.48 : x - Step 2: Convert to fraction form
1,434,988,132.80/1,980,283,605.12 = 774,938,352.48/x - Step 3: Cross multiply
1,434,988,132.80x = 1,980,283,605.12 × 774,938,352.48 - Step 4: Simplify right side
1,434,988,132.80x = 1,534,597,714,394,847,744 - Step 5: Solve for x
x = 1,534,597,714,394,847,744/1,434,988,132.80 - Step 6: Final answer
x = 1,069,414,916.62
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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.