Finding the Fourth Proportional to 890,384,433.20, 1,335,576,649.80 and 657,932,139.80
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Solution
The fourth proportional to 890,384,433.20, 1,335,576,649.80 and 657,932,139.80 is: 986,898,209.70
Step by Step Solution
- Step 1: Write the proportion equation
890,384,433.20 : 1,335,576,649.80 = 657,932,139.80 : x - Step 2: Convert to fraction form
890,384,433.20/1,335,576,649.80 = 657,932,139.80/x - Step 3: Cross multiply
890,384,433.20x = 1,335,576,649.80 × 657,932,139.80 - Step 4: Simplify right side
890,384,433.20x = 878,718,803,069,829,120 - Step 5: Solve for x
x = 878,718,803,069,829,120/890,384,433.20 - Step 6: Final answer
x = 986,898,209.70
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1.5x scale
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.