Finding the Fourth Proportional to 1,917,249,848.20, 2,875,874,772.30 and 987,440,674.60
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Solution
The fourth proportional to 1,917,249,848.20, 2,875,874,772.30 and 987,440,674.60 is: 1,481,161,011.90
Step by Step Solution
- Step 1: Write the proportion equation
1,917,249,848.20 : 2,875,874,772.30 = 987,440,674.60 : x - Step 2: Convert to fraction form
1,917,249,848.20/2,875,874,772.30 = 987,440,674.60/x - Step 3: Cross multiply
1,917,249,848.20x = 2,875,874,772.30 × 987,440,674.60 - Step 4: Simplify right side
1,917,249,848.20x = 2,839,755,725,225,033,728 - Step 5: Solve for x
x = 2,839,755,725,225,033,728/1,917,249,848.20 - Step 6: Final answer
x = 1,481,161,011.90
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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.