Finding the Fourth Proportional to 919,034,441.91, 1,371,383,726.13 and 819,985,257.54
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Solution
The fourth proportional to 919,034,441.91, 1,371,383,726.13 and 819,985,257.54 is: 1,223,582,475.89
Step by Step Solution
- Step 1: Write the proportion equation
919,034,441.91 : 1,371,383,726.13 = 819,985,257.54 : x - Step 2: Convert to fraction form
919,034,441.91/1,371,383,726.13 = 819,985,257.54/x - Step 3: Cross multiply
919,034,441.91x = 1,371,383,726.13 × 819,985,257.54 - Step 4: Simplify right side
919,034,441.91x = 1,124,514,437,856,872,960 - Step 5: Solve for x
x = 1,124,514,437,856,872,960/919,034,441.91 - Step 6: Final answer
x = 1,223,582,475.89
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.