Finding the Fourth Proportional to 3,930,771,817.80, 5,896,157,726.70 and 3,631,464,246.60
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Solution
The fourth proportional to 3,930,771,817.80, 5,896,157,726.70 and 3,631,464,246.60 is: 5,447,196,369.90
Step by Step Solution
- Step 1: Write the proportion equation
3,930,771,817.80 : 5,896,157,726.70 = 3,631,464,246.60 : x - Step 2: Convert to fraction form
3,930,771,817.80/5,896,157,726.70 = 3,631,464,246.60/x - Step 3: Cross multiply
3,930,771,817.80x = 5,896,157,726.70 × 3,631,464,246.60 - Step 4: Simplify right side
3,930,771,817.80x = 21,411,685,976,825,384,960 - Step 5: Solve for x
x = 21,411,685,976,825,384,960/3,930,771,817.80 - Step 6: Final answer
x = 5,447,196,369.90
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1.5x scale
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.