Finding the Fourth Proportional to 1,147,151,918.20, 1,720,725,252.88 and 491,677,925.08
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Solution
The fourth proportional to 1,147,151,918.20, 1,720,725,252.88 and 491,677,925.08 is: 737,515,762.77
Step by Step Solution
- Step 1: Write the proportion equation
1,147,151,918.20 : 1,720,725,252.88 = 491,677,925.08 : x - Step 2: Convert to fraction form
1,147,151,918.20/1,720,725,252.88 = 491,677,925.08/x - Step 3: Cross multiply
1,147,151,918.20x = 1,720,725,252.88 × 491,677,925.08 - Step 4: Simplify right side
1,147,151,918.20x = 846,042,621,968,796,672 - Step 5: Solve for x
x = 846,042,621,968,796,672/1,147,151,918.20 - Step 6: Final answer
x = 737,515,762.77
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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.