Finding the Fourth Proportional to 1,391,828,644.92, 2,086,363,939.95 and 653,577,006.09
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Solution
The fourth proportional to 1,391,828,644.92, 2,086,363,939.95 and 653,577,006.09 is: 979,717,943.34
Step by Step Solution
- Step 1: Write the proportion equation
1,391,828,644.92 : 2,086,363,939.95 = 653,577,006.09 : x - Step 2: Convert to fraction form
1,391,828,644.92/2,086,363,939.95 = 653,577,006.09/x - Step 3: Cross multiply
1,391,828,644.92x = 2,086,363,939.95 × 653,577,006.09 - Step 4: Simplify right side
1,391,828,644.92x = 1,363,599,497,486,657,536 - Step 5: Solve for x
x = 1,363,599,497,486,657,536/1,391,828,644.92 - Step 6: Final answer
x = 979,717,943.34
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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.