Finding the Fourth Proportional to 1,917,249,747.70, 2,875,874,621.55 and 987,440,574.10
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Solution
The fourth proportional to 1,917,249,747.70, 2,875,874,621.55 and 987,440,574.10 is: 1,481,160,861.15
Step by Step Solution
- Step 1: Write the proportion equation
1,917,249,747.70 : 2,875,874,621.55 = 987,440,574.10 : x - Step 2: Convert to fraction form
1,917,249,747.70/2,875,874,621.55 = 987,440,574.10/x - Step 3: Cross multiply
1,917,249,747.70x = 2,875,874,621.55 × 987,440,574.10 - Step 4: Simplify right side
1,917,249,747.70x = 2,839,755,287,342,952,448 - Step 5: Solve for x
x = 2,839,755,287,342,952,448/1,917,249,747.70 - Step 6: Final answer
x = 1,481,160,861.15
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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.