Finding the Fourth Proportional to 1,386,257,251.36, 1,912,823,423.04 and 783,207,835.60
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Solution
The fourth proportional to 1,386,257,251.36, 1,912,823,423.04 and 783,207,835.60 is: 1,080,707,272.46
Step by Step Solution
- Step 1: Write the proportion equation
1,386,257,251.36 : 1,912,823,423.04 = 783,207,835.60 : x - Step 2: Convert to fraction form
1,386,257,251.36/1,912,823,423.04 = 783,207,835.60/x - Step 3: Cross multiply
1,386,257,251.36x = 1,912,823,423.04 × 783,207,835.60 - Step 4: Simplify right side
1,386,257,251.36x = 1,498,138,293,044,141,568 - Step 5: Solve for x
x = 1,498,138,293,044,141,568/1,386,257,251.36 - Step 6: Final answer
x = 1,080,707,272.46
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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.