Finding the Fourth Proportional to 1,378,466,283.28, 2,067,717,418.08 and 458,342,621.68
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Solution
The fourth proportional to 1,378,466,283.28, 2,067,717,418.08 and 458,342,621.68 is: 687,519,915.28
Step by Step Solution
- Step 1: Write the proportion equation
1,378,466,283.28 : 2,067,717,418.08 = 458,342,621.68 : x - Step 2: Convert to fraction form
1,378,466,283.28/2,067,717,418.08 = 458,342,621.68/x - Step 3: Cross multiply
1,378,466,283.28x = 2,067,717,418.08 × 458,342,621.68 - Step 4: Simplify right side
1,378,466,283.28x = 947,723,022,296,187,776 - Step 5: Solve for x
x = 947,723,022,296,187,776/1,378,466,283.28 - Step 6: Final answer
x = 687,519,915.28
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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.