Finding the Fourth Proportional to 690,525,106.36, 952,925,029.09 and 372,985,350.80
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Solution
The fourth proportional to 690,525,106.36, 952,925,029.09 and 372,985,350.80 is: 514,719,990.62
Step by Step Solution
- Step 1: Write the proportion equation
690,525,106.36 : 952,925,029.09 = 372,985,350.80 : x - Step 2: Convert to fraction form
690,525,106.36/952,925,029.09 = 372,985,350.80/x - Step 3: Cross multiply
690,525,106.36x = 952,925,029.09 × 372,985,350.80 - Step 4: Simplify right side
690,525,106.36x = 355,427,076,267,543,104 - Step 5: Solve for x
x = 355,427,076,267,543,104/690,525,106.36 - Step 6: Final answer
x = 514,719,990.62
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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.