Finding the Fourth Proportional to 1,369,418,517.96, 1,889,797,554.74 and 782,720,251.08
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Solution
The fourth proportional to 1,369,418,517.96, 1,889,797,554.74 and 782,720,251.08 is: 1,080,153,946.46
Step by Step Solution
- Step 1: Write the proportion equation
1,369,418,517.96 : 1,889,797,554.74 = 782,720,251.08 : x - Step 2: Convert to fraction form
1,369,418,517.96/1,889,797,554.74 = 782,720,251.08/x - Step 3: Cross multiply
1,369,418,517.96x = 1,889,797,554.74 × 782,720,251.08 - Step 4: Simplify right side
1,369,418,517.96x = 1,479,182,816,536,462,848 - Step 5: Solve for x
x = 1,479,182,816,536,462,848/1,369,418,517.96 - Step 6: Final answer
x = 1,080,153,946.46
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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.