Finding the Fourth Proportional to 1,512,747,409.02, 2,087,591,511.69 and 817,386,385.02
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Solution
The fourth proportional to 1,512,747,409.02, 2,087,591,511.69 and 817,386,385.02 is: 1,127,993,258.47
Step by Step Solution
- Step 1: Write the proportion equation
1,512,747,409.02 : 2,087,591,511.69 = 817,386,385.02 : x - Step 2: Convert to fraction form
1,512,747,409.02/2,087,591,511.69 = 817,386,385.02/x - Step 3: Cross multiply
1,512,747,409.02x = 2,087,591,511.69 × 817,386,385.02 - Step 4: Simplify right side
1,512,747,409.02x = 1,706,368,879,138,726,144 - Step 5: Solve for x
x = 1,706,368,879,138,726,144/1,512,747,409.02 - Step 6: Final answer
x = 1,127,993,258.47
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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.