Finding the Fourth Proportional to 1,917,249,577.20, 2,875,874,365.80 and 987,440,403.60
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Solution
The fourth proportional to 1,917,249,577.20, 2,875,874,365.80 and 987,440,403.60 is: 1,481,160,605.40
Step by Step Solution
- Step 1: Write the proportion equation
1,917,249,577.20 : 2,875,874,365.80 = 987,440,403.60 : x - Step 2: Convert to fraction form
1,917,249,577.20/2,875,874,365.80 = 987,440,403.60/x - Step 3: Cross multiply
1,917,249,577.20x = 2,875,874,365.80 × 987,440,403.60 - Step 4: Simplify right side
1,917,249,577.20x = 2,839,754,544,468,446,208 - Step 5: Solve for x
x = 2,839,754,544,468,446,208/1,917,249,577.20 - Step 6: Final answer
x = 1,481,160,605.40
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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.