Finding the Fourth Proportional to 664,852,221.20, 997,278,331.80 and 389,353,206.80
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Solution
The fourth proportional to 664,852,221.20, 997,278,331.80 and 389,353,206.80 is: 584,029,810.20
Step by Step Solution
- Step 1: Write the proportion equation
664,852,221.20 : 997,278,331.80 = 389,353,206.80 : x - Step 2: Convert to fraction form
664,852,221.20/997,278,331.80 = 389,353,206.80/x - Step 3: Cross multiply
664,852,221.20x = 997,278,331.80 × 389,353,206.80 - Step 4: Simplify right side
664,852,221.20x = 388,293,516,558,484,416 - Step 5: Solve for x
x = 388,293,516,558,484,416/664,852,221.20 - Step 6: Final answer
x = 584,029,810.20
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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.