Finding the Fourth Proportional to 636,422,726.70, 878,257,012.20 and 354,160,335.99
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Solution
The fourth proportional to 636,422,726.70, 878,257,012.20 and 354,160,335.99 is: 488,737,729.62
Step by Step Solution
- Step 1: Write the proportion equation
636,422,726.70 : 878,257,012.20 = 354,160,335.99 : x - Step 2: Convert to fraction form
636,422,726.70/878,257,012.20 = 354,160,335.99/x - Step 3: Cross multiply
636,422,726.70x = 878,257,012.20 × 354,160,335.99 - Step 4: Simplify right side
636,422,726.70x = 311,043,798,528,278,592 - Step 5: Solve for x
x = 311,043,798,528,278,592/636,422,726.70 - Step 6: Final answer
x = 488,737,729.62
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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.