Finding the Fourth Proportional to 1,889,568,009.20, 2,834,352,013.80 and 579,672,232.40
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Solution
The fourth proportional to 1,889,568,009.20, 2,834,352,013.80 and 579,672,232.40 is: 869,508,348.60
Step by Step Solution
- Step 1: Write the proportion equation
1,889,568,009.20 : 2,834,352,013.80 = 579,672,232.40 : x - Step 2: Convert to fraction form
1,889,568,009.20/2,834,352,013.80 = 579,672,232.40/x - Step 3: Cross multiply
1,889,568,009.20x = 2,834,352,013.80 × 579,672,232.40 - Step 4: Simplify right side
1,889,568,009.20x = 1,642,995,159,246,881,536 - Step 5: Solve for x
x = 1,642,995,159,246,881,536/1,889,568,009.20 - Step 6: Final answer
x = 869,508,348.60
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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.