Finding the Fourth Proportional to 1,889,571,415.20, 2,834,357,122.80 and 1,338,573,386.40
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Solution
The fourth proportional to 1,889,571,415.20, 2,834,357,122.80 and 1,338,573,386.40 is: 2,007,860,079.60
Step by Step Solution
- Step 1: Write the proportion equation
1,889,571,415.20 : 2,834,357,122.80 = 1,338,573,386.40 : x - Step 2: Convert to fraction form
1,889,571,415.20/2,834,357,122.80 = 1,338,573,386.40/x - Step 3: Cross multiply
1,889,571,415.20x = 2,834,357,122.80 × 1,338,573,386.40 - Step 4: Simplify right side
1,889,571,415.20x = 3,793,995,012,133,357,056 - Step 5: Solve for x
x = 3,793,995,012,133,357,056/1,889,571,415.20 - Step 6: Final answer
x = 2,007,860,079.60
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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.