Finding the Fourth Proportional to 2,015,360,145.36, 2,781,209,910.87 and 1,123,343,433.18
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Solution
The fourth proportional to 2,015,360,145.36, 2,781,209,910.87 and 1,123,343,433.18 is: 1,550,221,133.86
Step by Step Solution
- Step 1: Write the proportion equation
2,015,360,145.36 : 2,781,209,910.87 = 1,123,343,433.18 : x - Step 2: Convert to fraction form
2,015,360,145.36/2,781,209,910.87 = 1,123,343,433.18/x - Step 3: Cross multiply
2,015,360,145.36x = 2,781,209,910.87 × 1,123,343,433.18 - Step 4: Simplify right side
2,015,360,145.36x = 3,124,253,889,670,947,840 - Step 5: Solve for x
x = 3,124,253,889,670,947,840/2,015,360,145.36 - Step 6: Final answer
x = 1,550,221,133.86
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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.