Finding the Fourth Proportional to 679,759.47, 938,113.92 and 449,920.76
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Solution
The fourth proportional to 679,759.47, 938,113.92 and 449,920.76 is: 620,920.99
Step by Step Solution
- Step 1: Write the proportion equation
679,759.47 : 938,113.92 = 449,920.76 : x - Step 2: Convert to fraction form
679,759.47/938,113.92 = 449,920.76/x - Step 3: Cross multiply
679,759.47x = 938,113.92 × 449,920.76 - Step 4: Simplify right side
679,759.47x = 422,076,923,162.41 - Step 5: Solve for x
x = 422,076,923,162.41/679,759.47 - Step 6: Final answer
x = 620,920.99
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1.5x scale
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.