Finding the Fourth Proportional to 690,525,107.36, 952,925,030.47 and 372,985,351.80
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Solution
The fourth proportional to 690,525,107.36, 952,925,030.47 and 372,985,351.80 is: 514,719,991.99
Step by Step Solution
- Step 1: Write the proportion equation
690,525,107.36 : 952,925,030.47 = 372,985,351.80 : x - Step 2: Convert to fraction form
690,525,107.36/952,925,030.47 = 372,985,351.80/x - Step 3: Cross multiply
690,525,107.36x = 952,925,030.47 × 372,985,351.80 - Step 4: Simplify right side
690,525,107.36x = 355,427,077,728,878,720 - Step 5: Solve for x
x = 355,427,077,728,878,720/690,525,107.36 - Step 6: Final answer
x = 514,719,991.99
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1.5x scale
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.